***** 2025 JANUARY *****
Calendar for Whitin Observatory at Wellesley College, west longitude (h.m.s) = 4 45 13, latitude (d.m) = 42 17.7
Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given
in Eastern time ( 5 hr W), for 40 m above surroundings, DAYLIGHT time used, * shows night clocks are reset.
Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College.
Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Wed Jan 01/Thu Jan 02 677.7 7 03 09 16 25 18 05 5 33 7 13 1 07 12 37 ..... 18 12 6 20 54.0 -21 45
Thu Jan 02/Fri Jan 03 678.7 7 07 05 16 26 18 06 5 33 7 13 1 12 12 41 ..... 19 27 12 21 47.6 -16 48
Fri Jan 03/Sat Jan 04 679.7 7 11 02 16 27 18 07 5 34 7 13 1 17 12 45 ..... 20 42 20 22 38.8 -10 58
Sat Jan 04/Sun Jan 05 680.7 7 14 58 16 28 18 07 5 34 7 13 1 21 12 49 ..... 21 56 30 23 28.6 - 4 34
Sun Jan 05/Mon Jan 06 681.7 7 18 55 16 29 18 08 5 34 7 13 1 26 12 53 ..... 23 10 40 0 17.9 2 05
Mon Jan 06/Tue Jan 07 682.7 7 22 52 16 30 18 09 5 34 7 13 1 31 12 57 ..... 0 24 52 1 07.9 8 41
Tue Jan 07/Wed Jan 08 683.7 7 26 48 16 31 18 10 5 34 7 13 1 36 13 01 ..... 1 40 63 2 00.1 14 53
Wed Jan 08/Thu Jan 09 684.7 7 30 45 16 32 18 11 5 33 7 12 1 41 13 05 ..... 2 58 74 2 55.4 20 18
Thu Jan 09/Fri Jan 10 685.7 7 34 41 16 33 18 12 5 33 7 12 1 46 13 09 ..... 4 16 83 3 54.3 24 33
Fri Jan 10/Sat Jan 11 686.7 7 38 38 16 34 18 13 5 33 7 12 1 50 13 13 ..... 5 29 91 4 56.4 27 17
Sat Jan 11/Sun Jan 12 687.7 7 42 34 16 35 18 14 5 33 7 11 1 55 13 16 ..... 6 33 96 6 00.2 28 12
Sun Jan 12/Mon Jan 13 688.7 7 46 31 16 36 18 15 5 33 7 11 2 00 13 20 ..... 7 25 99 7 03.1 27 17
Mon Jan 13/Tue Jan 14 689.7 7 50 27 16 37 18 16 5 33 7 11 2 05 13 24 16 09 8 05 100 8 03.0 24 42
Tue Jan 14/Wed Jan 15 690.7 7 54 24 16 39 18 17 5 32 7 10 2 10 13 28 17 21 8 36 98 8 58.6 20 47
Wed Jan 15/Thu Jan 16 691.7 7 58 21 16 40 18 18 5 32 7 10 2 15 13 31 18 33 ..... 94 9 49.9 15 56
Thu Jan 16/Fri Jan 17 692.7 8 02 17 16 41 18 19 5 32 7 09 2 20 13 35 19 41 ..... 88 10 37.3 10 30
Fri Jan 17/Sat Jan 18 693.7 8 06 14 16 42 18 20 5 31 7 09 2 25 13 38 20 45 ..... 81 11 21.8 4 46
Sat Jan 18/Sun Jan 19 694.7 8 10 10 16 43 18 21 5 31 7 08 2 30 13 42 21 48 ..... 73 12 04.7 - 1 02
Sun Jan 19/Mon Jan 20 695.7 8 14 07 16 44 18 22 5 30 7 07 2 35 13 45 22 49 ..... 65 12 47.0 - 6 43
Mon Jan 20/Tue Jan 21 696.7 8 18 03 16 46 18 23 5 30 7 07 2 40 13 49 23 51 ..... 55 13 29.9 -12 07
Tue Jan 21/Wed Jan 22 697.7 8 22 00 16 47 18 24 5 29 7 06 2 45 13 52 0 54 ..... 46 14 14.2 -17 06
Wed Jan 22/Thu Jan 23 698.7 8 25 56 16 48 18 25 5 29 7 05 2 50 13 56 1 58 ..... 37 15 01.1 -21 29
Thu Jan 23/Fri Jan 24 699.7 8 29 53 16 49 18 26 5 28 7 04 2 55 13 59 3 04 ..... 28 15 51.0 -25 02
Fri Jan 24/Sat Jan 25 700.7 8 33 50 16 51 18 27 5 27 7 04 3 00 14 02 4 09 ..... 19 16 44.5 -27 33
Sat Jan 25/Sun Jan 26 701.7 8 37 46 16 52 18 28 5 27 7 03 3 05 14 05 5 11 ..... 12 17 41.0 -28 45
Sun Jan 26/Mon Jan 27 702.7 8 41 43 16 53 18 29 5 26 7 02 3 10 14 09 6 05 ..... 6 18 39.4 -28 28
Mon Jan 27/Tue Jan 28 703.7 8 45 39 16 55 18 30 5 25 7 01 3 15 14 12 6 50 ..... 2 19 38.2 -26 35
Tue Jan 28/Wed Jan 29 704.7 8 49 36 16 56 18 32 5 25 7 00 3 20 14 15 7 26 15 52 0 20 35.8 -23 11
Wed Jan 29/Thu Jan 30 705.7 8 53 32 16 57 18 33 5 24 6 59 3 25 14 18 7 56 17 08 1 21 31.2 -18 26
Thu Jan 30/Fri Jan 31 706.7 8 57 29 16 58 18 34 5 23 6 58 3 30 14 21 8 21 18 26 4 22 24.3 -12 40
Fri Jan 31/Sat Feb 01 707.7 9 01 25 17 00 18 35 5 22 6 57 3 35 14 24 ..... 19 43 9 23 15.5 - 6 12
***** 2025 FEBRUARY *****
Calendar for Whitin Observatory at Wellesley College, west longitude (h.m.s) = 4 45 13, latitude (d.m) = 42 17.7
Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given
in Eastern time ( 5 hr W), for 40 m above surroundings, DAYLIGHT time used, * shows night clocks are reset.
Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College.
Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Sat Feb 01/Sun Feb 02 708.7 9 05 22 17 01 18 36 5 21 6 56 3 41 14 27 ..... 20 58 17 0 05.7 0 35
Sun Feb 02/Mon Feb 03 709.7 9 09 19 17 02 18 37 5 20 6 55 3 46 14 31 ..... 22 14 26 0 56.2 7 20
Mon Feb 03/Tue Feb 04 710.7 9 13 15 17 04 18 38 5 19 6 54 3 51 14 34 ..... 23 30 37 1 48.1 13 41
Tue Feb 04/Wed Feb 05 711.7 9 17 12 17 05 18 39 5 18 6 53 3 56 14 36 ..... 0 48 48 2 42.3 19 17
Wed Feb 05/Thu Feb 06 712.7 9 21 08 17 06 18 41 5 17 6 52 4 01 14 39 ..... 2 06 59 3 39.6 23 46
Thu Feb 06/Fri Feb 07 713.7 9 25 05 17 08 18 42 5 16 6 50 4 06 14 42 ..... 3 20 70 4 39.8 26 49
Fri Feb 07/Sat Feb 08 714.7 9 29 01 17 09 18 43 5 15 6 49 4 11 14 45 ..... 4 25 79 5 41.7 28 11
Sat Feb 08/Sun Feb 09 715.7 9 32 58 17 10 18 44 5 14 6 48 4 16 14 48 ..... 5 20 88 6 43.5 27 46
Sun Feb 09/Mon Feb 10 716.7 9 36 54 17 11 18 45 5 13 6 47 4 21 14 51 ..... 6 03 94 7 43.1 25 42
Mon Feb 10/Tue Feb 11 717.7 9 40 51 17 13 18 46 5 12 6 45 4 26 14 54 ..... 6 37 98 8 39.2 22 14
Tue Feb 11/Wed Feb 12 718.7 9 44 48 17 14 18 48 5 11 6 44 4 31 14 56 16 16 7 03 100 9 31.3 17 40
Wed Feb 12/Thu Feb 13 719.7 9 48 44 17 15 18 49 5 10 6 43 4 37 14 59 17 25 7 26 100 10 19.8 12 24
Thu Feb 13/Fri Feb 14 720.7 9 52 41 17 17 18 50 5 08 6 41 4 42 15 02 18 31 7 45 97 11 05.3 6 42
Fri Feb 14/Sat Feb 15 721.7 9 56 37 17 18 18 51 5 07 6 40 4 47 15 05 19 34 8 03 93 11 49.0 0 50
Sat Feb 15/Sun Feb 16 722.7 10 00 34 17 19 18 52 5 06 6 39 4 52 15 07 20 36 ..... 87 12 31.7 - 4 59
Sun Feb 16/Mon Feb 17 723.7 10 04 30 17 20 18 53 5 04 6 37 4 57 15 10 21 38 ..... 80 13 14.6 -10 34
Mon Feb 17/Tue Feb 18 724.7 10 08 27 17 22 18 55 5 03 6 36 5 02 15 12 22 40 ..... 72 13 58.6 -15 45
Tue Feb 18/Wed Feb 19 725.7 10 12 23 17 23 18 56 5 02 6 34 5 07 15 15 23 44 ..... 64 14 44.5 -20 22
Wed Feb 19/Thu Feb 20 726.7 10 16 20 17 24 18 57 5 00 6 33 5 12 15 18 0 49 ..... 54 15 33.2 -24 13
Thu Feb 20/Fri Feb 21 727.7 10 20 17 17 26 18 58 4 59 6 31 5 18 15 20 1 54 ..... 45 16 25.0 -27 05
Fri Feb 21/Sat Feb 22 728.7 10 24 13 17 27 18 59 4 58 6 30 5 23 15 23 2 56 ..... 35 17 19.8 -28 45
Sat Feb 22/Sun Feb 23 729.7 10 28 10 17 28 19 00 4 56 6 28 5 28 15 25 3 53 ..... 26 18 17.0 -29 01
Sun Feb 23/Mon Feb 24 730.7 10 32 06 17 29 19 02 4 55 6 27 5 33 15 28 4 41 ..... 17 19 15.2 -27 45
Mon Feb 24/Tue Feb 25 731.7 10 36 03 17 30 19 03 4 53 6 25 5 38 15 30 5 21 ..... 10 20 13.1 -24 55
Tue Feb 25/Wed Feb 26 732.7 10 39 59 17 32 19 04 4 52 6 24 5 43 15 32 5 54 ..... 5 21 09.5 -20 39
Wed Feb 26/Thu Feb 27 733.7 10 43 56 17 33 19 05 4 50 6 22 5 48 15 35 6 21 ..... 1 22 03.9 -15 10
Thu Feb 27/Fri Feb 28 734.7 10 47 52 17 34 19 06 4 49 6 21 5 53 15 37 6 45 17 18 0 22 56.6 - 8 47
Fri Feb 28/Sat Mar 01 735.7 10 51 49 17 35 19 08 4 47 6 19 5 59 15 40 7 08 18 36 2 23 48.3 - 1 53
***** 2025 MARCH *****
Calendar for Whitin Observatory at Wellesley College, west longitude (h.m.s) = 4 45 13, latitude (d.m) = 42 17.7
Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given
in Eastern time ( 5 hr W), for 40 m above surroundings, DAYLIGHT time used, * shows night clocks are reset.
Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College.
Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Sat Mar 01/Sun Mar 02 736.7 10 55 46 17 37 19 09 4 45 6 17 6 04 15 42 7 31 19 55 6 0 40.0 5 09
Sun Mar 02/Mon Mar 03 737.7 10 59 42 17 38 19 10 4 44 6 16 6 09 15 44 ..... 21 14 13 1 32.9 11 52
Mon Mar 03/Tue Mar 04 738.7 11 03 39 17 39 19 11 4 42 6 14 6 14 15 47 ..... 22 34 22 2 27.8 17 53
Tue Mar 04/Wed Mar 05 739.7 11 07 35 17 40 19 12 4 40 6 12 6 19 15 49 ..... 23 54 33 3 25.4 22 46
Wed Mar 05/Thu Mar 06 740.7 11 11 32 17 41 19 14 4 39 6 11 6 24 15 51 ..... 1 11 44 4 25.5 26 13
Thu Mar 06/Fri Mar 07 741.7 11 15 28 17 43 19 15 4 37 6 09 6 29 15 53 ..... 2 20 55 5 27.2 27 59
Fri Mar 07/Sat Mar 08 742.7 11 19 25 17 44 19 16 4 35 6 07 6 35 15 56 ..... 3 18 66 6 28.7 27 59
Sat Mar 08/Sun Mar 09* 743.7 11 23 21 17 45 19 17 5 34 7 06 6 40 15 58 ..... 5 04 76 7 28.2 26 19
Sun Mar 09/Mon Mar 10 744.7 10 27 08 18 46 20 18 5 32 7 04 6 45 16 00 ..... 5 40 84 8 22.6 23 25
Mon Mar 10/Tue Mar 11 745.7 10 31 05 18 47 20 20 5 30 7 02 6 50 16 02 ..... 6 08 91 9 15.1 19 13
Tue Mar 11/Wed Mar 12 746.7 10 35 01 18 49 20 21 5 28 7 01 6 55 16 04 ..... 6 31 96 10 03.9 14 11
Wed Mar 12/Thu Mar 13 747.7 10 38 58 18 50 20 22 5 27 6 59 7 00 16 07 17 19 6 50 99 10 49.8 8 38
Thu Mar 13/Fri Mar 14 748.7 10 42 54 18 51 20 23 5 25 6 57 7 06 16 09 18 23 7 08 100 11 33.7 2 50
Fri Mar 14/Sat Mar 15 749.7 10 46 51 18 52 20 25 5 23 6 56 7 11 16 11 19 25 7 26 99 12 16.5 - 3 02
Sat Mar 15/Sun Mar 16 750.7 10 50 47 18 53 20 26 5 21 6 54 7 16 16 13 20 27 ..... 97 12 59.3 - 8 44
Sun Mar 16/Mon Mar 17 751.7 10 54 44 18 54 20 27 5 19 6 52 7 21 16 15 21 29 ..... 92 13 42.9 -14 06
Mon Mar 17/Tue Mar 18 752.7 10 58 41 18 55 20 28 5 18 6 50 7 27 16 17 22 33 ..... 86 14 28.2 -18 57
Tue Mar 18/Wed Mar 19 753.7 11 02 37 18 57 20 30 5 16 6 49 7 32 16 19 23 37 ..... 79 15 15.8 -23 05
Wed Mar 19/Thu Mar 20 754.7 11 06 34 18 58 20 31 5 14 6 47 7 37 16 21 0 41 ..... 71 16 06.2 -26 18
Thu Mar 20/Fri Mar 21 755.7 11 10 30 18 59 20 32 5 12 6 45 7 42 16 23 1 44 ..... 62 16 59.4 -28 24
Fri Mar 21/Sat Mar 22 756.7 11 14 27 19 00 20 34 5 10 6 43 7 47 16 25 2 42 ..... 53 17 54.9 -29 12
Sat Mar 22/Sun Mar 23 757.7 11 18 23 19 01 20 35 5 08 6 42 7 53 16 27 3 33 ..... 43 18 51.7 -28 33
Sun Mar 23/Mon Mar 24 758.7 11 22 20 19 02 20 36 5 06 6 40 7 58 16 29 4 15 ..... 33 19 48.5 -26 25
Mon Mar 24/Tue Mar 25 759.7 11 26 16 19 03 20 37 5 04 6 38 8 03 16 31 4 50 ..... 23 20 44.3 -22 50
Tue Mar 25/Wed Mar 26 760.7 11 30 13 19 05 20 39 5 02 6 37 8 08 16 33 5 19 ..... 15 21 38.6 -17 58
Wed Mar 26/Thu Mar 27 761.7 11 34 10 19 06 20 40 5 00 6 35 8 14 16 35 5 45 ..... 7 22 31.4 -12 02
Thu Mar 27/Fri Mar 28 762.7 11 38 06 19 07 20 42 4 59 6 33 8 19 16 37 6 08 17 07 3 23 23.4 - 5 20
Fri Mar 28/Sat Mar 29 763.7 11 42 03 19 08 20 43 4 57 6 31 8 24 16 39 6 31 18 25 0 0 15.5 1 45
Sat Mar 29/Sun Mar 30 764.7 11 45 59 19 09 20 44 4 55 6 30 8 30 16 41 6 56 19 46 1 1 08.7 8 48
Sun Mar 30/Mon Mar 31 765.7 11 49 56 19 10 20 46 4 53 6 28 8 35 16 43 ..... 21 08 4 2 04.2 15 21
Mon Mar 31/Tue Apr 01 766.7 11 53 52 19 11 20 47 4 51 6 26 8 40 16 45 ..... 22 31 10 3 02.5 20 55
***** 2025 APRIL *****
Calendar for Whitin Observatory at Wellesley College, west longitude (h.m.s) = 4 45 13, latitude (d.m) = 42 17.7
Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given
in Eastern time ( 5 hr W), for 40 m above surroundings, DAYLIGHT time used, * shows night clocks are reset.
Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College.
Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Tue Apr 01/Wed Apr 02 767.7 11 57 49 19 12 20 48 4 49 6 24 8 46 16 47 ..... 23 53 19 4 03.8 25 05
Wed Apr 02/Thu Apr 03 768.7 12 01 45 19 14 20 50 4 47 6 23 8 51 16 49 ..... 1 09 29 5 07.0 27 31
Thu Apr 03/Fri Apr 04 769.7 12 05 42 19 15 20 51 4 45 6 21 8 56 16 51 ..... 2 13 39 6 10.2 28 05
Fri Apr 04/Sat Apr 05 770.7 12 09 39 19 16 20 53 4 43 6 19 9 02 16 53 ..... 3 03 50 7 11.4 26 52
Sat Apr 05/Sun Apr 06 771.7 12 13 35 19 17 20 54 4 41 6 18 9 07 16 55 ..... 3 42 61 8 08.9 24 07
Sun Apr 06/Mon Apr 07 772.7 12 17 32 19 18 20 55 4 39 6 16 9 13 16 57 ..... 4 12 71 9 02.1 20 11
Mon Apr 07/Tue Apr 08 773.7 12 21 28 19 19 20 57 4 37 6 14 9 18 16 59 ..... 4 36 80 9 51.4 15 23
Tue Apr 08/Wed Apr 09 774.7 12 25 25 19 20 20 58 4 35 6 13 9 23 17 01 ..... 4 57 87 10 37.5 10 00
Wed Apr 09/Thu Apr 10 775.7 12 29 21 19 22 21 00 4 33 6 11 9 29 17 03 ..... 5 15 93 11 21.5 4 18
Thu Apr 10/Fri Apr 11 776.7 12 33 18 19 23 21 01 4 31 6 09 9 34 17 05 17 17 5 33 97 12 04.2 - 1 31
Fri Apr 11/Sat Apr 12 777.7 12 37 14 19 24 21 03 4 29 6 08 9 40 17 07 18 19 5 50 99 12 46.7 - 7 15
Sat Apr 12/Sun Apr 13 778.7 12 41 11 19 25 21 04 4 27 6 06 9 45 17 09 19 20 6 09 100 13 30.0 -12 44
Sun Apr 13/Mon Apr 14 779.7 12 45 08 19 26 21 06 4 25 6 04 9 51 17 10 20 23 6 31 99 14 14.9 -17 45
Mon Apr 14/Tue Apr 15 780.7 12 49 04 19 27 21 07 4 23 6 03 9 56 17 12 21 27 ..... 96 15 02.1 -22 07
Tue Apr 15/Wed Apr 16 781.7 12 53 01 19 28 21 09 4 21 6 01 10 01 17 14 22 32 ..... 91 15 52.0 -25 36
Wed Apr 16/Thu Apr 17 782.7 12 56 57 19 29 21 10 4 19 6 00 10 07 17 16 23 35 ..... 85 16 44.5 -28 01
Thu Apr 17/Fri Apr 18 783.7 13 00 54 19 31 21 12 4 17 5 58 10 12 17 18 0 35 ..... 77 17 39.3 -29 11
Fri Apr 18/Sat Apr 19 784.7 13 04 50 19 32 21 14 4 15 5 56 10 18 17 20 1 27 ..... 68 18 35.3 -28 57
Sat Apr 19/Sun Apr 20 785.7 13 08 47 19 33 21 15 4 13 5 55 10 24 17 22 2 11 ..... 59 19 31.3 -27 16
Sun Apr 20/Mon Apr 21 786.7 13 12 43 19 34 21 17 4 11 5 53 10 29 17 24 2 48 ..... 48 20 26.3 -24 12
Mon Apr 21/Tue Apr 22 787.7 13 16 40 19 35 21 18 4 09 5 52 10 35 17 26 3 18 ..... 38 21 19.7 -19 52
Tue Apr 22/Wed Apr 23 788.7 13 20 37 19 36 21 20 4 07 5 50 10 40 17 28 3 44 ..... 28 22 11.6 -14 28
Wed Apr 23/Thu Apr 24 789.7 13 24 33 19 37 21 22 4 05 5 49 10 46 17 30 4 08 ..... 18 23 02.5 - 8 13
Thu Apr 24/Fri Apr 25 790.7 13 28 30 19 38 21 23 4 03 5 47 10 51 17 32 4 30 ..... 10 23 53.4 - 1 24
Fri Apr 25/Sat Apr 26 791.7 13 32 26 19 40 21 25 4 01 5 46 10 57 17 34 4 54 ..... 4 0 45.4 5 36
Sat Apr 26/Sun Apr 27 792.7 13 36 23 19 41 21 27 3 59 5 45 11 03 17 36 5 20 18 35 1 1 39.7 12 24
Sun Apr 27/Mon Apr 28 793.7 13 40 19 19 42 21 28 3 57 5 43 11 08 17 38 5 51 19 59 0 2 37.3 18 29
Mon Apr 28/Tue Apr 29 794.7 13 44 16 19 43 21 30 3 55 5 42 11 14 17 40 ..... 21 24 3 3 38.6 23 20
Tue Apr 29/Wed Apr 30 795.7 13 48 12 19 44 21 32 3 53 5 40 11 19 17 42 ..... 22 46 8 4 42.7 26 32
Wed Apr 30/Thu May 01 796.7 13 52 09 19 45 21 33 3 51 5 39 11 25 17 44 ..... 23 58 16 5 48.0 27 48
***** 2025 MAY *****
Calendar for Whitin Observatory at Wellesley College, west longitude (h.m.s) = 4 45 13, latitude (d.m) = 42 17.7
Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given
in Eastern time ( 5 hr W), for 40 m above surroundings, DAYLIGHT time used, * shows night clocks are reset.
Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College.
Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Thu May 01/Fri May 02 797.7 13 56 06 19 46 21 35 3 49 5 38 11 31 17 46 ..... 0 56 25 6 51.7 27 09
Fri May 02/Sat May 03 798.7 14 00 02 19 47 21 37 3 47 5 36 11 36 17 48 ..... 1 40 35 7 51.8 24 47
Sat May 03/Sun May 04 799.7 14 03 59 19 48 21 38 3 45 5 35 11 42 17 50 ..... 2 14 45 8 47.2 21 06
Sun May 04/Mon May 05 800.7 14 07 55 19 50 21 40 3 43 5 34 11 48 17 52 ..... 2 41 56 9 38.1 16 28
Mon May 05/Tue May 06 801.7 14 11 52 19 51 21 42 3 42 5 33 11 53 17 54 ..... 3 02 65 10 25.2 11 12
Tue May 06/Wed May 07 802.7 14 15 48 19 52 21 43 3 40 5 31 11 59 17 56 ..... 3 21 75 11 09.6 5 35
Wed May 07/Thu May 08 803.7 14 19 45 19 53 21 45 3 38 5 30 12 04 17 58 ..... 3 39 82 11 52.4 - 0 10
Thu May 08/Fri May 09 804.7 14 23 41 19 54 21 47 3 36 5 29 12 10 18 00 ..... 3 57 89 12 34.8 - 5 54
Fri May 09/Sat May 10 805.7 14 27 38 19 55 21 48 3 34 5 28 12 16 18 03 ..... 4 15 94 13 17.7 -11 25
Sat May 10/Sun May 11 806.7 14 31 35 19 56 21 50 3 33 5 27 12 21 18 05 18 15 4 36 98 14 02.1 -16 32
Sun May 11/Mon May 12 807.7 14 35 31 19 57 21 52 3 31 5 26 12 27 18 07 19 19 5 01 100 14 48.7 -21 05
Mon May 12/Tue May 13 808.7 14 39 28 19 58 21 54 3 29 5 25 12 33 18 09 20 23 5 30 100 15 38.1 -24 50
Tue May 13/Wed May 14 809.7 14 43 24 19 59 21 55 3 27 5 23 12 38 18 11 21 27 6 07 98 16 30.4 -27 32
Wed May 14/Thu May 15 810.7 14 47 21 20 00 21 57 3 26 5 22 12 44 18 14 22 28 ..... 94 17 25.1 -29 01
Thu May 15/Fri May 16 811.7 14 51 17 20 01 21 59 3 24 5 21 12 50 18 16 23 23 ..... 89 18 21.2 -29 07
Fri May 16/Sat May 17 812.7 14 55 14 20 02 22 00 3 23 5 21 12 55 18 18 0 10 ..... 82 19 17.3 -27 47
Sat May 17/Sun May 18 813.7 14 59 10 20 03 22 02 3 21 5 20 13 01 18 21 0 48 ..... 73 20 12.2 -25 03
Sun May 18/Mon May 19 814.7 15 03 07 20 04 22 04 3 19 5 19 13 06 18 23 1 20 ..... 64 21 05.4 -21 05
Mon May 19/Tue May 20 815.7 15 07 04 20 05 22 05 3 18 5 18 13 12 18 26 1 46 ..... 53 21 56.6 -16 03
Tue May 20/Wed May 21 816.7 15 11 00 20 06 22 07 3 16 5 17 13 18 18 28 2 10 ..... 42 22 46.4 -10 11
Wed May 21/Thu May 22 817.7 15 14 57 20 07 22 08 3 15 5 16 13 23 18 30 2 32 ..... 32 23 35.8 - 3 44
Thu May 22/Fri May 23 818.7 15 18 53 20 08 22 10 3 14 5 15 13 29 18 33 2 54 ..... 21 0 25.8 3 01
Fri May 23/Sat May 24 819.7 15 22 50 20 09 22 12 3 12 5 15 13 34 18 36 3 18 ..... 13 1 17.8 9 44
Sat May 24/Sun May 25 820.7 15 26 46 20 10 22 13 3 11 5 14 13 40 18 38 3 46 ..... 6 2 13.0 15 59
Sun May 25/Mon May 26 821.7 15 30 43 20 11 22 15 3 10 5 13 13 45 18 41 4 21 18 51 2 3 12.1 21 19
Mon May 26/Tue May 27 822.7 15 34 39 20 12 22 16 3 08 5 13 13 51 18 43 5 05 20 15 0 4 15.2 25 13
Tue May 27/Wed May 28 823.7 15 38 36 20 13 22 18 3 07 5 12 13 56 18 46 6 02 21 34 2 5 20.9 27 17
Wed May 28/Thu May 29 824.7 15 42 33 20 14 22 19 3 06 5 11 14 01 18 49 ..... 22 40 6 6 26.5 27 21
Thu May 29/Fri May 30 825.7 15 46 29 20 14 22 21 3 05 5 11 14 07 18 52 ..... 23 32 12 7 29.5 25 33
Fri May 30/Sat May 31 826.7 15 50 26 20 15 22 22 3 04 5 10 14 12 18 55 ..... 0 11 21 8 27.9 22 12
Sat May 31/Sun Jun 01 827.7 15 54 22 20 16 22 23 3 03 5 10 14 17 18 58 ..... 0 42 30 9 21.4 17 45
***** 2025 JUNE *****
Calendar for Whitin Observatory at Wellesley College, west longitude (h.m.s) = 4 45 13, latitude (d.m) = 42 17.7
Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given
in Eastern time ( 5 hr W), for 40 m above surroundings, DAYLIGHT time used, * shows night clocks are reset.
Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College.
Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Sun Jun 01/Mon Jun 02 828.7 15 58 19 20 17 22 25 3 02 5 09 14 23 19 00 ..... 1 06 40 10 10.4 12 34
Mon Jun 02/Tue Jun 03 829.7 16 02 15 20 18 22 26 3 01 5 09 14 28 19 03 ..... 1 26 50 10 56.1 6 58
Tue Jun 03/Wed Jun 04 830.7 16 06 12 20 18 22 27 3 00 5 09 14 33 19 07 ..... 1 44 60 11 39.6 1 13
Wed Jun 04/Thu Jun 05 831.7 16 10 08 20 19 22 28 2 59 5 08 14 38 19 10 ..... 2 02 69 12 22.1 - 4 32
Thu Jun 05/Fri Jun 06 832.7 16 14 05 20 20 22 29 2 58 5 08 14 43 19 13 ..... 2 21 77 13 04.8 -10 06
Fri Jun 06/Sat Jun 07 833.7 16 18 02 20 20 22 30 2 58 5 08 14 48 19 16 ..... 2 41 85 13 48.7 -15 19
Sat Jun 07/Sun Jun 08 834.7 16 21 58 20 21 22 31 2 57 5 07 14 53 19 19 ..... 3 04 91 14 34.6 -20 00
Sun Jun 08/Mon Jun 09 835.7 16 25 55 20 22 22 32 2 56 5 07 14 58 19 23 18 14 3 32 95 15 23.3 -23 58
Mon Jun 09/Tue Jun 10 836.7 16 29 51 20 22 22 33 2 56 5 07 15 03 19 26 19 19 4 07 99 16 15.1 -26 58
Tue Jun 10/Wed Jun 11 837.7 16 33 48 20 23 22 34 2 55 5 07 15 08 19 30 20 21 4 50 100 17 09.6 -28 47
Wed Jun 11/Thu Jun 12 838.7 16 37 44 20 23 22 35 2 55 5 07 15 13 19 33 21 18 5 43 99 18 06.1 -29 13
Thu Jun 12/Fri Jun 13 839.7 16 41 41 20 24 22 36 2 55 5 07 15 17 19 37 22 08 ..... 96 19 02.9 -28 12
Fri Jun 13/Sat Jun 14 840.7 16 45 37 20 24 22 37 2 54 5 07 15 22 19 40 22 49 ..... 92 19 58.8 -25 45
Sat Jun 14/Sun Jun 15 841.7 16 49 34 20 25 22 37 2 54 5 07 15 27 19 44 23 22 ..... 85 20 52.8 -22 00
Sun Jun 15/Mon Jun 16 842.7 16 53 31 20 25 22 38 2 54 5 07 15 31 19 48 23 50 ..... 77 21 44.5 -17 10
Mon Jun 16/Tue Jun 17 843.7 16 57 27 20 25 22 38 2 54 5 07 15 36 19 52 0 14 ..... 67 22 34.2 -11 30
Tue Jun 17/Wed Jun 18 844.7 17 01 24 20 26 22 39 2 54 5 07 15 40 19 56 0 36 ..... 57 23 22.9 - 5 15
Wed Jun 18/Thu Jun 19 845.7 17 05 20 20 26 22 39 2 54 5 07 15 44 20 00 0 57 ..... 46 0 11.7 1 19
Thu Jun 19/Fri Jun 20 846.7 17 09 17 20 26 22 39 2 54 5 07 15 49 20 04 1 19 ..... 34 1 01.7 7 53
Fri Jun 20/Sat Jun 21 847.7 17 13 13 20 27 22 40 2 54 5 07 15 53 20 08 1 44 ..... 24 1 54.3 14 08
Sat Jun 21/Sun Jun 22 848.7 17 17 10 20 27 22 40 2 55 5 08 15 57 20 12 2 15 ..... 15 2 50.6 19 38
Sun Jun 22/Mon Jun 23 849.7 17 21 06 20 27 22 40 2 55 5 08 16 01 20 17 2 54 17 49 7 3 51.0 23 57
Mon Jun 23/Tue Jun 24 850.7 17 25 03 20 27 22 40 2 55 5 08 16 05 20 21 3 44 19 09 2 4 54.8 26 40
Tue Jun 24/Wed Jun 25 851.7 17 29 00 20 27 22 40 2 56 5 09 16 09 20 25 4 46 20 20 0 6 00.3 27 28
Wed Jun 25/Thu Jun 26 852.7 17 32 56 20 27 22 40 2 56 5 09 16 13 20 30 5 59 21 19 1 7 04.6 26 20
Thu Jun 26/Fri Jun 27 853.7 17 36 53 20 27 22 40 2 57 5 09 16 16 20 34 ..... 22 05 4 8 05.3 23 29
Fri Jun 27/Sat Jun 28 854.7 17 40 49 20 27 22 40 2 58 5 10 16 20 20 39 ..... 22 39 9 9 01.4 19 19
Sat Jun 28/Sun Jun 29 855.7 17 44 46 20 27 22 39 2 58 5 10 16 24 20 43 ..... 23 06 16 9 52.7 14 15
Sun Jun 29/Mon Jun 30 856.7 17 48 42 20 27 22 39 2 59 5 11 16 27 20 48 ..... 23 29 25 10 40.2 8 40
Mon Jun 30/Tue Jul 01 857.7 17 52 39 20 27 22 39 3 00 5 11 16 31 20 53 ..... 23 48 34 11 24.9 2 52
***** 2025 JULY *****
Calendar for Whitin Observatory at Wellesley College, west longitude (h.m.s) = 4 45 13, latitude (d.m) = 42 17.7
Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given
in Eastern time ( 5 hr W), for 40 m above surroundings, DAYLIGHT time used, * shows night clocks are reset.
Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College.
Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Tue Jul 01/Wed Jul 02 858.7 17 56 35 20 27 22 38 3 01 5 12 16 34 20 58 ..... 0 06 43 12 08.0 - 2 58
Wed Jul 02/Thu Jul 03 859.7 18 00 32 20 27 22 37 3 02 5 12 16 38 21 03 ..... 0 25 53 12 50.8 - 8 37
Thu Jul 03/Fri Jul 04 860.7 18 04 29 20 26 22 37 3 03 5 13 16 41 21 08 ..... 0 44 62 13 34.3 -13 57
Fri Jul 04/Sat Jul 05 861.7 18 08 25 20 26 22 36 3 04 5 14 16 44 21 13 ..... 1 06 71 14 19.4 -18 47
Sat Jul 05/Sun Jul 06 862.7 18 12 22 20 26 22 36 3 05 5 14 16 48 21 18 ..... 1 32 80 15 07.1 -22 58
Sun Jul 06/Mon Jul 07 863.7 18 16 18 20 26 22 35 3 06 5 15 16 51 21 23 ..... 2 04 87 15 57.8 -26 15
Mon Jul 07/Tue Jul 08 864.7 18 20 15 20 25 22 34 3 07 5 16 16 54 21 28 18 11 2 45 92 16 51.7 -28 26
Tue Jul 08/Wed Jul 09 865.7 18 24 11 20 25 22 33 3 08 5 16 16 57 21 33 19 11 3 35 97 17 47.9 -29 17
Wed Jul 09/Thu Jul 10 866.7 18 28 08 20 24 22 32 3 09 5 17 17 00 21 38 20 03 4 35 99 18 45.4 -28 41
Thu Jul 10/Fri Jul 11 867.7 18 32 04 20 24 22 31 3 11 5 18 17 03 21 43 20 48 5 42 100 19 42.5 -26 34
Fri Jul 11/Sat Jul 12 868.7 18 36 01 20 23 22 30 3 12 5 19 17 06 21 49 21 24 ..... 98 20 37.9 -23 04
Sat Jul 12/Sun Jul 13 869.7 18 39 58 20 23 22 29 3 13 5 19 17 09 21 54 21 53 ..... 94 21 31.1 -18 23
Sun Jul 13/Mon Jul 14 870.7 18 43 54 20 22 22 28 3 15 5 20 17 11 21 59 22 19 ..... 88 22 22.1 -12 46
Mon Jul 14/Tue Jul 15 871.7 18 47 51 20 22 22 27 3 16 5 21 17 14 22 05 22 41 ..... 80 23 11.5 - 6 32
Tue Jul 15/Wed Jul 16 872.7 18 51 47 20 21 22 25 3 18 5 22 17 17 22 10 23 02 ..... 70 0 00.3 0 02
Wed Jul 16/Thu Jul 17 873.7 18 55 44 20 20 22 24 3 19 5 23 17 19 22 15 23 24 ..... 59 0 49.7 6 37
Thu Jul 17/Fri Jul 18 874.7 18 59 40 20 20 22 23 3 21 5 24 17 22 22 21 23 47 ..... 48 1 41.0 12 54
Fri Jul 18/Sat Jul 19 875.7 19 03 37 20 19 22 21 3 22 5 24 17 25 22 26 0 15 ..... 37 2 35.3 18 31
Sat Jul 19/Sun Jul 20 876.7 19 07 33 20 18 22 20 3 24 5 25 17 27 22 32 0 49 ..... 26 3 33.3 23 04
Sun Jul 20/Mon Jul 21 877.7 19 11 30 20 17 22 18 3 25 5 26 17 30 22 37 1 33 ..... 16 4 34.8 26 11
Mon Jul 21/Tue Jul 22 878.7 19 15 27 20 17 22 17 3 27 5 27 17 32 22 43 2 30 18 04 9 5 38.5 27 32
Tue Jul 22/Wed Jul 23 879.7 19 19 23 20 16 22 16 3 28 5 28 17 35 22 48 3 37 19 07 3 6 42.3 27 00
Wed Jul 23/Thu Jul 24 880.7 19 23 20 20 15 22 14 3 30 5 29 17 37 22 54 4 51 19 57 1 7 43.7 24 42
Thu Jul 24/Fri Jul 25 881.7 19 27 16 20 14 22 12 3 32 5 30 17 39 22 59 6 07 20 36 0 8 41.1 20 57
Fri Jul 25/Sat Jul 26 882.7 19 31 13 20 13 22 11 3 33 5 31 17 42 23 05 ..... 21 06 2 9 34.1 16 08
Sat Jul 26/Sun Jul 27 883.7 19 35 09 20 12 22 09 3 35 5 32 17 44 23 10 ..... 21 30 6 10 23.1 10 38
Sun Jul 27/Mon Jul 28 884.7 19 39 06 20 11 22 08 3 36 5 33 17 46 23 16 ..... 21 51 12 11 09.0 4 49
Mon Jul 28/Tue Jul 29 885.7 19 43 02 20 10 22 06 3 38 5 34 17 49 23 22 ..... 22 10 20 11 52.9 - 1 06
Tue Jul 29/Wed Jul 30 886.7 19 46 59 20 09 22 04 3 40 5 35 17 51 23 27 ..... 22 28 28 12 36.0 - 6 53
Wed Jul 30/Thu Jul 31 887.7 19 50 56 20 08 22 02 3 41 5 36 17 53 23 33 ..... 22 47 37 13 19.3 -12 21
Thu Jul 31/Fri Aug 01 888.7 19 54 52 20 07 22 01 3 43 5 37 17 55 23 38 ..... 23 08 46 14 03.8 -17 23
***** 2025 AUGUST *****
Calendar for Whitin Observatory at Wellesley College, west longitude (h.m.s) = 4 45 13, latitude (d.m) = 42 17.7
Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given
in Eastern time ( 5 hr W), for 40 m above surroundings, DAYLIGHT time used, * shows night clocks are reset.
Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College.
Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Fri Aug 01/Sat Aug 02 889.7 19 58 49 20 05 21 59 3 45 5 38 17 57 23 44 ..... 23 32 56 14 50.4 -21 46
Sat Aug 02/Sun Aug 03 890.7 20 02 45 20 04 21 57 3 46 5 39 17 59 23 50 ..... 0 02 65 15 39.8 -25 21
Sun Aug 03/Mon Aug 04 891.7 20 06 42 20 03 21 55 3 48 5 40 18 02 23 55 ..... 0 38 74 16 32.2 -27 54
Mon Aug 04/Tue Aug 05 892.7 20 10 38 20 02 21 53 3 50 5 41 18 04 0 01 ..... 1 24 82 17 27.4 -29 13
Tue Aug 05/Wed Aug 06 893.7 20 14 35 20 01 21 52 3 51 5 42 18 06 0 06 17 55 2 21 89 18 24.4 -29 06
Wed Aug 06/Thu Aug 07 894.7 20 18 31 19 59 21 50 3 53 5 43 18 08 0 12 18 43 3 26 94 19 21.9 -27 30
Thu Aug 07/Fri Aug 08 895.7 20 22 28 19 58 21 48 3 54 5 44 18 10 0 18 19 22 4 36 98 20 18.5 -24 25
Fri Aug 08/Sat Aug 09 896.7 20 26 25 19 57 21 46 3 56 5 45 18 12 0 23 19 55 5 50 100 21 13.2 -20 00
Sat Aug 09/Sun Aug 10 897.7 20 30 21 19 55 21 44 3 58 5 46 18 14 0 29 20 22 ..... 99 22 05.9 -14 31
Sun Aug 10/Mon Aug 11 898.7 20 34 18 19 54 21 42 3 59 5 47 18 16 0 34 20 45 ..... 96 22 56.9 - 8 15
Mon Aug 11/Tue Aug 12 899.7 20 38 14 19 53 21 40 4 01 5 49 18 18 0 40 21 07 ..... 90 23 46.9 - 1 33
Tue Aug 12/Wed Aug 13 900.7 20 42 11 19 51 21 38 4 03 5 50 18 20 0 45 21 29 ..... 82 0 37.2 5 14
Wed Aug 13/Thu Aug 14 901.7 20 46 07 19 50 21 36 4 04 5 51 18 22 0 51 21 52 ..... 72 1 28.8 11 44
Thu Aug 14/Fri Aug 15 902.7 20 50 04 19 48 21 34 4 06 5 52 18 24 0 56 22 18 ..... 62 2 22.8 17 36
Fri Aug 15/Sat Aug 16 903.7 20 54 00 19 47 21 32 4 07 5 53 18 26 1 02 22 50 ..... 50 3 20.0 22 25
Sat Aug 16/Sun Aug 17 904.7 20 57 57 19 45 21 30 4 09 5 54 18 28 1 07 23 30 ..... 39 4 20.3 25 51
Sun Aug 17/Mon Aug 18 905.7 21 01 54 19 44 21 28 4 10 5 55 18 30 1 13 0 21 ..... 28 5 22.8 27 35
Mon Aug 18/Tue Aug 19 906.7 21 05 50 19 42 21 26 4 12 5 56 18 32 1 18 1 23 ..... 18 6 25.6 27 31
Tue Aug 19/Wed Aug 20 907.7 21 09 47 19 41 21 24 4 14 5 57 18 34 1 24 2 34 17 53 11 7 26.6 25 41
Wed Aug 20/Thu Aug 21 908.7 21 13 43 19 39 21 22 4 15 5 58 18 36 1 29 3 49 18 34 5 8 24.2 22 21
Thu Aug 21/Fri Aug 22 909.7 21 17 40 19 38 21 20 4 17 5 59 18 37 1 35 5 02 19 07 1 9 17.7 17 52
Fri Aug 22/Sat Aug 23 910.7 21 21 36 19 36 21 18 4 18 6 00 18 39 1 40 6 13 19 32 0 10 07.4 12 35
Sat Aug 23/Sun Aug 24 911.7 21 25 33 19 35 21 16 4 20 6 01 18 41 1 46 ..... 19 54 1 10 53.9 6 50
Sun Aug 24/Mon Aug 25 912.7 21 29 29 19 33 21 14 4 21 6 02 18 43 1 51 ..... 20 14 4 11 38.3 0 55
Mon Aug 25/Tue Aug 26 913.7 21 33 26 19 31 21 12 4 23 6 03 18 45 1 57 ..... 20 32 8 12 21.6 - 4 57
Tue Aug 26/Wed Aug 27 914.7 21 37 23 19 30 21 10 4 24 6 04 18 47 2 02 ..... 20 51 15 13 04.8 -10 35
Wed Aug 27/Thu Aug 28 915.7 21 41 19 19 28 21 08 4 25 6 05 18 49 2 08 ..... 21 11 22 13 48.9 -15 47
Thu Aug 28/Fri Aug 29 916.7 21 45 16 19 26 21 06 4 27 6 07 18 51 2 13 ..... 21 33 30 14 34.6 -20 24
Fri Aug 29/Sat Aug 30 917.7 21 49 12 19 25 21 04 4 28 6 08 18 53 2 18 ..... 22 01 39 15 22.7 -24 14
Sat Aug 30/Sun Aug 31 918.7 21 53 09 19 23 21 02 4 30 6 09 18 55 2 24 ..... 22 34 49 16 13.5 -27 08
Sun Aug 31/Mon Sep 01 919.7 21 57 05 19 21 21 00 4 31 6 10 18 56 2 29 ..... 23 15 58 17 07.0 -28 52
***** 2025 SEPTEMBER *****
Calendar for Whitin Observatory at Wellesley College, west longitude (h.m.s) = 4 45 13, latitude (d.m) = 42 17.7
Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given
in Eastern time ( 5 hr W), for 40 m above surroundings, DAYLIGHT time used, * shows night clocks are reset.
Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College.
Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Mon Sep 01/Tue Sep 02 920.7 22 01 02 19 20 20 58 4 33 6 11 18 58 2 34 ..... 0 06 68 18 02.6 -29 17
Tue Sep 02/Wed Sep 03 921.7 22 04 58 19 18 20 56 4 34 6 12 19 00 2 40 ..... 1 07 76 18 59.2 -28 16
Wed Sep 03/Thu Sep 04 922.7 22 08 55 19 16 20 54 4 35 6 13 19 02 2 45 17 18 2 15 85 19 55.7 -25 46
Thu Sep 04/Fri Sep 05 923.7 22 12 51 19 15 20 52 4 37 6 14 19 04 2 50 17 53 3 28 91 20 50.9 -21 52
Fri Sep 05/Sat Sep 06 924.7 22 16 48 19 13 20 50 4 38 6 15 19 06 2 56 18 22 4 42 97 21 44.6 -16 45
Sat Sep 06/Sun Sep 07 925.7 22 20 45 19 11 20 48 4 39 6 16 19 08 3 01 18 47 5 57 99 22 36.8 -10 40
Sun Sep 07/Mon Sep 08 926.7 22 24 41 19 09 20 46 4 41 6 17 19 10 3 06 19 10 ..... 100 23 28.2 - 3 56
Mon Sep 08/Tue Sep 09 927.7 22 28 38 19 08 20 44 4 42 6 18 19 12 3 11 19 32 ..... 97 0 19.7 3 04
Tue Sep 09/Wed Sep 10 928.7 22 32 34 19 06 20 42 4 43 6 19 19 14 3 17 19 55 ..... 92 1 12.4 9 56
Wed Sep 10/Thu Sep 11 929.7 22 36 31 19 04 20 40 4 45 6 20 19 16 3 22 20 20 ..... 84 2 07.3 16 13
Thu Sep 11/Fri Sep 12 930.7 22 40 27 19 02 20 38 4 46 6 21 19 17 3 27 20 51 ..... 75 3 05.2 21 31
Fri Sep 12/Sat Sep 13 931.7 22 44 24 19 01 20 36 4 47 6 22 19 19 3 32 21 29 ..... 64 4 06.2 25 23
Sat Sep 13/Sun Sep 14 932.7 22 48 20 18 59 20 34 4 49 6 23 19 21 3 38 22 17 ..... 53 5 09.1 27 33
Sun Sep 14/Mon Sep 15 933.7 22 52 17 18 57 20 32 4 50 6 24 19 23 3 43 23 16 ..... 41 6 12.3 27 52
Mon Sep 15/Tue Sep 16 934.7 22 56 14 18 55 20 30 4 51 6 25 19 25 3 48 0 24 ..... 31 7 13.6 26 24
Tue Sep 16/Wed Sep 17 935.7 23 00 10 18 54 20 28 4 52 6 27 19 27 3 53 1 37 ..... 21 8 11.4 23 25
Wed Sep 17/Thu Sep 18 936.7 23 04 07 18 52 20 26 4 54 6 28 19 29 3 59 2 50 17 09 13 9 05.1 19 13
Thu Sep 18/Fri Sep 19 937.7 23 08 03 18 50 20 24 4 55 6 29 19 31 4 04 4 00 17 36 7 9 54.9 14 11
Fri Sep 19/Sat Sep 20 938.7 23 12 00 18 48 20 22 4 56 6 30 19 33 4 09 5 08 17 59 3 10 41.5 8 36
Sat Sep 20/Sun Sep 21 939.7 23 15 56 18 47 20 20 4 57 6 31 19 35 4 14 6 13 18 19 0 11 25.9 2 45
Sun Sep 21/Mon Sep 22 940.7 23 19 53 18 45 20 18 4 58 6 32 19 37 4 19 7 17 18 37 0 12 09.2 - 3 07
Mon Sep 22/Tue Sep 23 941.7 23 23 49 18 43 20 16 5 00 6 33 19 39 4 24 ..... 18 56 2 12 52.1 - 8 48
Tue Sep 23/Wed Sep 24 942.7 23 27 46 18 41 20 14 5 01 6 34 19 41 4 29 ..... 19 15 5 13 35.7 -14 08
Wed Sep 24/Thu Sep 25 943.7 23 31 43 18 39 20 12 5 02 6 35 19 43 4 35 ..... 19 37 10 14 20.8 -18 56
Thu Sep 25/Fri Sep 26 944.7 23 35 39 18 38 20 10 5 03 6 36 19 45 4 40 ..... 20 02 16 15 07.9 -23 00
Fri Sep 26/Sat Sep 27 945.7 23 39 36 18 36 20 09 5 04 6 37 19 47 4 45 ..... 20 32 24 15 57.5 -26 11
Sat Sep 27/Sun Sep 28 946.7 23 43 32 18 34 20 07 5 06 6 38 19 50 4 50 ..... 21 10 32 16 49.4 -28 16
Sun Sep 28/Mon Sep 29 947.7 23 47 29 18 32 20 05 5 07 6 39 19 52 4 55 ..... 21 57 41 17 43.4 -29 07
Mon Sep 29/Tue Sep 30 948.7 23 51 25 18 31 20 03 5 08 6 40 19 54 5 00 ..... 22 52 51 18 38.5 -28 37
Tue Sep 30/Wed Oct 01 949.7 23 55 22 18 29 20 01 5 09 6 42 19 56 5 05 ..... 23 56 61 19 33.7 -26 43
***** 2025 OCTOBER *****
Calendar for Whitin Observatory at Wellesley College, west longitude (h.m.s) = 4 45 13, latitude (d.m) = 42 17.7
Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given
in Eastern time ( 5 hr W), for 40 m above surroundings, DAYLIGHT time used, * shows night clocks are reset.
Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College.
Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Wed Oct 01/Thu Oct 02 950.7 23 59 18 18 27 19 59 5 10 6 43 19 58 5 10 ..... 1 05 71 20 28.1 -23 27
Thu Oct 02/Fri Oct 03 951.7 0 03 15 18 26 19 58 5 11 6 44 20 00 5 16 ..... 2 18 80 21 21.3 -18 55
Fri Oct 03/Sat Oct 04 952.7 0 07 12 18 24 19 56 5 13 6 45 20 02 5 21 16 47 3 32 88 22 13.3 -13 19
Sat Oct 04/Sun Oct 05 953.7 0 11 08 18 22 19 54 5 14 6 46 20 05 5 26 17 10 4 46 94 23 04.7 - 6 53
Sun Oct 05/Mon Oct 06 954.7 0 15 05 18 20 19 52 5 15 6 47 20 07 5 31 17 33 6 03 99 23 56.3 0 05
Mon Oct 06/Tue Oct 07 955.7 0 19 01 18 19 19 51 5 16 6 48 20 09 5 36 17 55 7 22 100 0 49.3 7 10
Tue Oct 07/Wed Oct 08 956.7 0 22 58 18 17 19 49 5 17 6 49 20 11 5 41 18 20 ..... 98 1 44.8 13 55
Wed Oct 08/Thu Oct 09 957.7 0 26 54 18 15 19 47 5 18 6 50 20 13 5 46 18 49 ..... 94 2 43.6 19 50
Thu Oct 09/Fri Oct 10 958.7 0 30 51 18 14 19 46 5 19 6 52 20 16 5 51 19 25 ..... 87 3 46.0 24 23
Fri Oct 10/Sat Oct 11 959.7 0 34 47 18 12 19 44 5 21 6 53 20 18 5 56 20 11 ..... 77 4 50.8 27 11
Sat Oct 11/Sun Oct 12 960.7 0 38 44 18 10 19 42 5 22 6 54 20 20 6 01 21 08 ..... 67 5 56.2 28 02
Sun Oct 12/Mon Oct 13 961.7 0 42 41 18 09 19 41 5 23 6 55 20 23 6 06 22 15 ..... 56 6 59.7 26 58
Mon Oct 13/Tue Oct 14 962.7 0 46 37 18 07 19 39 5 24 6 56 20 25 6 11 23 28 ..... 45 7 59.2 24 15
Tue Oct 14/Wed Oct 15 963.7 0 50 34 18 05 19 38 5 25 6 57 20 27 6 16 0 41 ..... 34 8 54.1 20 16
Wed Oct 15/Thu Oct 16 964.7 0 54 30 18 04 19 36 5 26 6 58 20 30 6 22 1 52 ..... 25 9 44.6 15 24
Thu Oct 16/Fri Oct 17 965.7 0 58 27 18 02 19 34 5 27 7 00 20 32 6 27 2 59 16 05 17 10 31.6 9 57
Fri Oct 17/Sat Oct 18 966.7 1 02 23 18 01 19 33 5 28 7 01 20 35 6 32 4 04 16 25 10 11 16.0 4 13
Sat Oct 18/Sun Oct 19 967.7 1 06 20 17 59 19 31 5 29 7 02 20 37 6 37 5 08 16 44 5 11 59.0 - 1 35
Sun Oct 19/Mon Oct 20 968.7 1 10 16 17 58 19 30 5 31 7 03 20 40 6 42 6 11 17 02 2 12 41.6 - 7 16
Mon Oct 20/Tue Oct 21 969.7 1 14 13 17 56 19 29 5 32 7 04 20 42 6 47 7 14 17 21 0 13 24.8 -12 39
Tue Oct 21/Wed Oct 22 970.7 1 18 10 17 55 19 27 5 33 7 05 20 45 6 52 ..... 17 41 1 14 09.2 -17 34
Wed Oct 22/Thu Oct 23 971.7 1 22 06 17 53 19 26 5 34 7 07 20 47 6 57 ..... 18 05 3 14 55.7 -21 48
Thu Oct 23/Fri Oct 24 972.7 1 26 03 17 52 19 24 5 35 7 08 20 50 7 02 ..... 18 34 6 15 44.4 -25 12
Fri Oct 24/Sat Oct 25 973.7 1 29 59 17 50 19 23 5 36 7 09 20 52 7 07 ..... 19 09 11 16 35.4 -27 34
Sat Oct 25/Sun Oct 26 974.7 1 33 56 17 49 19 22 5 37 7 10 20 55 7 12 ..... 19 52 18 17 28.3 -28 44
Sun Oct 26/Mon Oct 27 975.7 1 37 52 17 47 19 20 5 38 7 12 20 58 7 17 ..... 20 44 26 18 22.3 -28 37
Mon Oct 27/Tue Oct 28 976.7 1 41 49 17 46 19 19 5 39 7 13 21 00 7 22 ..... 21 44 35 19 16.2 -27 10
Tue Oct 28/Wed Oct 29 977.7 1 45 45 17 45 19 18 5 40 7 14 21 03 7 27 ..... 22 49 44 20 09.4 -24 24
Wed Oct 29/Thu Oct 30 978.7 1 49 42 17 43 19 17 5 42 7 15 21 06 7 32 ..... 23 58 54 21 01.3 -20 27
Thu Oct 30/Fri Oct 31 979.7 1 53 39 17 42 19 15 5 43 7 16 21 08 7 37 ..... 1 09 65 21 51.9 -15 25
Fri Oct 31/Sat Nov 01 980.7 1 57 35 17 41 19 14 5 44 7 18 21 11 7 42 ..... 2 21 75 22 41.8 - 9 31
***** 2025 NOVEMBER *****
Calendar for Whitin Observatory at Wellesley College, west longitude (h.m.s) = 4 45 13, latitude (d.m) = 42 17.7
Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given
in Eastern time ( 5 hr W), for 40 m above surroundings, DAYLIGHT time used, * shows night clocks are reset.
Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College.
Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Sat Nov 01/Sun Nov 02* 981.7 2 01 32 17 39 19 13 4 45 6 19 21 14 7 47 ..... 2 35 84 23 31.9 - 2 57
Sun Nov 02/Mon Nov 03 982.7 3 05 38 16 38 18 12 4 46 6 20 21 17 7 52 ..... 3 51 92 0 24.8 4 16
Mon Nov 03/Tue Nov 04 983.7 3 09 35 16 37 18 11 4 47 6 21 21 20 7 57 ..... 5 11 97 1 18.8 11 09
Tue Nov 04/Wed Nov 05 984.7 3 13 31 16 36 18 10 4 48 6 23 21 23 8 02 15 45 6 35 100 2 16.7 17 31
Wed Nov 05/Thu Nov 06 985.7 3 17 28 16 35 18 09 4 49 6 24 21 25 8 07 16 18 8 00 99 3 19.0 22 47
Thu Nov 06/Fri Nov 07 986.7 3 21 24 16 33 18 08 4 50 6 25 21 28 8 12 17 00 ..... 96 4 25.3 26 25
Fri Nov 07/Sat Nov 08 987.7 3 25 21 16 32 18 07 4 51 6 26 21 31 8 18 17 54 ..... 89 5 33.5 28 01
Sat Nov 08/Sun Nov 09 988.7 3 29 17 16 31 18 06 4 52 6 28 21 34 8 23 19 00 ..... 81 6 40.7 27 30
Sun Nov 09/Mon Nov 10 989.7 3 33 14 16 30 18 05 4 54 6 29 21 37 8 28 20 13 ..... 71 7 44.0 25 06
Mon Nov 10/Tue Nov 11 990.7 3 37 11 16 29 18 04 4 55 6 30 21 40 8 33 21 29 ..... 60 8 42.1 21 15
Tue Nov 11/Wed Nov 12 991.7 3 41 07 16 28 18 03 4 56 6 31 21 44 8 38 22 42 ..... 49 9 34.9 16 24
Wed Nov 12/Thu Nov 13 992.7 3 45 04 16 27 18 03 4 57 6 33 21 47 8 43 23 51 ..... 39 10 23.3 10 58
Thu Nov 13/Fri Nov 14 993.7 3 49 00 16 26 18 02 4 58 6 34 21 50 8 48 0 57 ..... 30 11 08.6 5 13
Fri Nov 14/Sat Nov 15 994.7 3 52 57 16 25 18 01 4 59 6 35 21 53 8 53 2 01 ..... 21 11 51.9 - 0 35
Sat Nov 15/Sun Nov 16 995.7 3 56 53 16 24 18 00 5 00 6 36 21 56 8 58 3 03 ..... 14 12 34.6 - 6 16
Sun Nov 16/Mon Nov 17 996.7 4 00 50 16 23 18 00 5 01 6 37 22 00 9 03 4 06 ..... 8 13 17.5 -11 41
Mon Nov 17/Tue Nov 18 997.7 4 04 46 16 23 17 59 5 02 6 39 22 03 9 08 5 09 ..... 4 14 01.6 -16 38
Tue Nov 18/Wed Nov 19 998.7 4 08 43 16 22 17 58 5 03 6 40 22 06 9 13 6 13 ..... 1 14 47.6 -20 57
Wed Nov 19/Thu Nov 20 999.7 4 12 40 16 21 17 58 5 04 6 41 22 10 9 18 7 17 15 37 0 15 35.9 -24 28
Thu Nov 20/Fri Nov 21 1000.7 4 16 36 16 20 17 57 5 05 6 42 22 13 9 23 8 18 16 10 1 16 26.5 -26 58
Fri Nov 21/Sat Nov 22 1001.7 4 20 33 16 20 17 57 5 06 6 43 22 16 9 27 ..... 16 51 3 17 19.0 -28 19
Sat Nov 22/Sun Nov 23 1002.7 4 24 29 16 19 17 56 5 07 6 45 22 20 9 32 ..... 17 40 8 18 12.5 -28 24
Sun Nov 23/Mon Nov 24 1003.7 4 28 26 16 18 17 56 5 08 6 46 22 23 9 37 ..... 18 37 13 19 05.9 -27 11
Mon Nov 24/Tue Nov 25 1004.7 4 32 22 16 18 17 56 5 09 6 47 22 27 9 42 ..... 19 41 20 19 58.3 -24 42
Tue Nov 25/Wed Nov 26 1005.7 4 36 19 16 17 17 55 5 10 6 48 22 31 9 47 ..... 20 47 29 20 49.1 -21 03
Wed Nov 26/Thu Nov 27 1006.7 4 40 15 16 17 17 55 5 11 6 49 22 34 9 52 ..... 21 56 38 21 38.4 -16 25
Thu Nov 27/Fri Nov 28 1007.7 4 44 12 16 16 17 55 5 12 6 50 22 38 9 57 ..... 23 05 48 22 26.5 -10 58
Fri Nov 28/Sat Nov 29 1008.7 4 48 09 16 16 17 54 5 13 6 51 22 41 10 02 ..... 0 15 59 23 14.3 - 4 51
Sat Nov 29/Sun Nov 30 1009.7 4 52 05 16 16 17 54 5 14 6 53 22 45 10 07 ..... 1 27 70 0 03.0 1 40
Sun Nov 30/Mon Dec 01 1010.7 4 56 02 16 15 17 54 5 15 6 54 22 49 10 12 ..... 2 42 80 0 53.9 8 20
***** 2025 DECEMBER *****
Calendar for Whitin Observatory at Wellesley College, west longitude (h.m.s) = 4 45 13, latitude (d.m) = 42 17.7
Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given
in Eastern time ( 5 hr W), for 40 m above surroundings, DAYLIGHT time used, * shows night clocks are reset.
Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College.
Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Mon Dec 01/Tue Dec 02 1011.7 4 59 58 16 15 17 54 5 16 6 55 22 53 10 17 ..... 4 01 88 1 48.3 14 46
Tue Dec 02/Wed Dec 03 1012.7 5 03 55 16 15 17 54 5 17 6 56 22 57 10 21 ..... 5 25 95 2 47.4 20 29
Wed Dec 03/Thu Dec 04 1013.7 5 07 51 16 14 17 54 5 17 6 57 23 00 10 26 ..... 6 49 99 3 51.7 24 54
Thu Dec 04/Fri Dec 05 1014.7 5 11 48 16 14 17 53 5 18 6 58 23 04 10 31 15 35 8 07 100 5 00.0 27 29
Fri Dec 05/Sat Dec 06 1015.7 5 15 44 16 14 17 53 5 19 6 59 23 08 10 36 16 36 ..... 97 6 09.6 27 54
Sat Dec 06/Sun Dec 07 1016.7 5 19 41 16 14 17 53 5 20 7 00 23 12 10 41 17 49 ..... 92 7 17.0 26 12
Sun Dec 07/Mon Dec 08 1017.7 5 23 38 16 14 17 54 5 21 7 00 23 16 10 45 19 07 ..... 85 8 19.6 22 44
Mon Dec 08/Tue Dec 09 1018.7 5 27 34 16 14 17 54 5 22 7 01 23 20 10 50 20 24 ..... 76 9 16.4 18 00
Tue Dec 09/Wed Dec 10 1019.7 5 31 31 16 14 17 54 5 22 7 02 23 24 10 55 21 38 ..... 66 10 08.0 12 31
Wed Dec 10/Thu Dec 11 1020.7 5 35 27 16 14 17 54 5 23 7 03 23 28 10 59 22 47 ..... 56 10 55.5 6 40
Thu Dec 11/Fri Dec 12 1021.7 5 39 24 16 14 17 54 5 24 7 04 23 32 11 04 23 52 ..... 46 11 40.3 0 44
Fri Dec 12/Sat Dec 13 1022.7 5 43 20 16 14 17 54 5 25 7 05 23 37 11 09 0 56 ..... 36 12 23.7 - 5 04
Sat Dec 13/Sun Dec 14 1023.7 5 47 17 16 14 17 55 5 25 7 05 23 41 11 13 1 58 ..... 27 13 06.9 -10 35
Sun Dec 14/Mon Dec 15 1024.7 5 51 13 16 15 17 55 5 26 7 06 23 45 11 18 3 01 ..... 19 13 50.8 -15 38
Mon Dec 15/Tue Dec 16 1025.7 5 55 10 16 15 17 55 5 27 7 07 23 49 11 23 4 05 ..... 13 14 36.4 -20 06
Tue Dec 16/Wed Dec 17 1026.7 5 59 07 16 15 17 55 5 27 7 07 23 54 11 27 5 08 ..... 7 15 24.3 -23 46
Wed Dec 17/Thu Dec 18 1027.7 6 03 03 16 16 17 56 5 28 7 08 23 58 11 32 6 11 ..... 3 16 14.5 -26 30
Thu Dec 18/Fri Dec 19 1028.7 6 07 00 16 16 17 56 5 28 7 09 0 02 11 36 7 09 ..... 1 17 06.8 -28 05
Fri Dec 19/Sat Dec 20 1029.7 6 10 56 16 16 17 57 5 29 7 09 0 07 11 41 8 01 15 36 0 18 00.4 -28 24
Sat Dec 20/Sun Dec 21 1030.7 6 14 53 16 17 17 57 5 29 7 10 0 11 11 45 8 45 16 31 1 18 54.2 -27 25
Sun Dec 21/Mon Dec 22 1031.7 6 18 49 16 17 17 58 5 30 7 10 0 15 11 50 ..... 17 34 4 19 47.0 -25 09
Mon Dec 22/Tue Dec 23 1032.7 6 22 46 16 18 17 58 5 30 7 11 0 20 11 54 ..... 18 40 9 20 38.2 -21 43
Tue Dec 23/Wed Dec 24 1033.7 6 26 42 16 18 17 59 5 31 7 11 0 24 11 58 ..... 19 48 15 21 27.4 -17 16
Wed Dec 24/Thu Dec 25 1034.7 6 30 39 16 19 17 59 5 31 7 11 0 29 12 03 ..... 20 56 23 22 15.0 -12 02
Thu Dec 25/Fri Dec 26 1035.7 6 34 36 16 20 18 00 5 32 7 12 0 33 12 07 ..... 22 05 33 23 01.8 - 6 11
Fri Dec 26/Sat Dec 27 1036.7 6 38 32 16 20 18 00 5 32 7 12 0 38 12 11 ..... 23 14 43 23 48.6 0 03
Sat Dec 27/Sun Dec 28 1037.7 6 42 29 16 21 18 01 5 32 7 12 0 43 12 16 ..... 0 25 54 0 36.8 6 27
Sun Dec 28/Mon Dec 29 1038.7 6 46 25 16 22 18 02 5 32 7 13 0 47 12 20 ..... 1 39 65 1 27.7 12 42
Mon Dec 29/Tue Dec 30 1039.7 6 50 22 16 22 18 03 5 33 7 13 0 52 12 24 ..... 2 58 75 2 22.6 18 28
Tue Dec 30/Wed Dec 31 1040.7 6 54 18 16 23 18 03 5 33 7 13 0 57 12 28 ..... 4 19 85 3 22.5 23 16
Wed Dec 31/Thu Jan 01 1041.7 6 58 15 16 24 18 04 5 33 7 13 1 01 12 32 ..... 5 39 93 4 27.4 26 35
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