KECK OBSERVATORY CALENDAR FOR 2024 -ASTRONOMICAL (computed for altitude 4160.0 m) ASTRONOMICAL(18 deg) TWILIGHT/DAWN MOON(midnight) DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (18 deg) Zenith 2024 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ RA DEC Dist 12 18 18 12 18 18 h h % h m d m deg SUN SEP 01 18 47 19 25 19 52 05 40 18 19 04 52 05 18 05 57 18 18 22 26 03 19 9.0 9.0 100 1025 1234 >90 MON SEP 02 18 46 19 24 19 51 06 29 18 52 04 52 05 19 05 57 18 21 22 30 03 23 9.0 9.0 100 1108 0714 >90 TUE SEP 03 18 45 19 23 19 50 19 23 04 53 05 19 05 57 18 23 22 34 03 28 9.0 9.0 100 1149 0141 >90 WED SEP 04 18 44 19 22 19 49 19 53 04 53 05 19 05 57 18 26 22 38 03 32 9.1 9.0 99 1230-0354 >90 THU SEP 05 18 43 19 21 19 48 20 23 04 53 05 19 05 57 18 29 22 42 03 36 9.1 8.5 93 1312-0923 >90 FRI SEP 06 18 43 19 21 19 47 20 55 04 54 05 20 05 58 18 32 22 46 03 41 9.1 8.0 87 1354-1434 >90 SAT SEP 07 18 42 19 20 19 46 21 30 04 54 05 20 05 58 18 35 22 50 03 45 9.1 7.4 81 1440-1918 >90 SUN SEP 08 18 41 19 19 19 45 22 09 04 54 05 20 05 58 18 38 22 54 03 49 9.2 6.8 73 1528-2322 >90 MON SEP 09 18 40 19 18 19 44 22 53 04 54 05 20 05 58 18 41 22 58 03 53 9.2 6.0 65 1620-2632 >90 TUE SEP 10 18 39 19 17 19 43 23 43 04 55 05 21 05 59 18 44 23 02 03 58 9.2 5.2 56 1715-2831 >90 WED SEP 11 18 38 19 16 19 42 00 39 04 55 05 21 05 59 18 47 23 06 04 01 9.2 4.3 46 1815-2859 86 THU SEP 12 18 37 19 15 19 41 14 19 01 40 04 55 05 21 05 59 18 50 23 10 04 05 9.2 3.2 35 1915-2759 74 FRI SEP 13 18 36 19 14 19 40 15 14 02 44 04 56 05 21 05 59 18 53 23 14 04 10 9.3 2.2 23 2016-2510 62 SAT SEP 14 18 35 19 13 19 39 16 04 03 49 04 56 05 22 05 59 18 56 23 18 04 14 9.3 1.1 12 2115-2043 50 SUN SEP 15 18 34 19 12 19 38 16 51 04 53 04 56 05 22 06 00 18 59 23 21 04 18 9.3 0.1 0 2213-1454 39 MON SEP 16 18 33 19 11 19 37 17 34 05 56 04 56 05 22 06 00 19 02 23 25 04 22 9.3 0.0 0 2308-0805 28 TUE SEP 17 18 32 19 10 19 36 18 14 06 59 04 57 05 22 06 00 19 05 23 29 04 27 9.3 0.0 0 0003-0045 22 WED SEP 18 18 32 19 09 19 35 18 55 04 57 05 23 06 00 19 08 23 33 04 31 9.4 0.0 0 0057 0637 24 THU SEP 19 18 31 19 08 19 34 19 36 04 57 05 23 06 00 19 11 23 37 04 35 9.4 0.0 0 0153 1331 33 FRI SEP 20 18 30 19 07 19 33 20 20 04 57 05 23 06 01 19 13 23 41 04 39 9.4 0.8 8 0250 1929 44 SAT SEP 21 18 29 19 06 19 32 21 07 04 58 05 23 06 01 19 16 23 45 04 44 9.4 1.6 16 0350 2407 56 SUN SEP 22 18 28 19 05 19 31 21 59 04 58 05 23 06 01 19 19 23 49 04 48 9.5 2.5 26 0451 2707 69 MON SEP 23 18 27 19 05 19 30 22 56 04 58 05 24 06 01 19 22 23 53 04 52 9.5 3.4 36 0551 2820 80 TUE SEP 24 18 26 19 04 19 29 23 54 04 58 05 24 06 01 19 25 23 57 04 56 9.5 4.4 46 0646 2722 >90 WED SEP 25 18 25 19 03 19 28 00 53 14 16 04 59 05 24 06 02 19 28 00 01 05 01 9.5 5.4 56 0748 2558 >90 THU SEP 26 18 24 19 02 19 27 01 50 15 03 04 59 05 24 06 02 19 31 00 05 05 05 9.5 6.4 66 0841 2248 >90 FRI SEP 27 18 23 19 01 19 26 02 45 15 44 04 59 05 25 06 02 19 34 00 09 05 09 9.6 7.3 76 0930 1840 >90 SAT SEP 28 18 23 19 00 19 26 03 37 16 21 04 59 05 25 06 02 19 38 00 13 05 13 9.6 8.2 85 1015 1353 >90 SUN SEP 29 18 22 18 59 19 25 04 26 16 54 05 00 05 25 06 03 19 41 00 17 05 17 9.6 9.0 94 1059 0838 >90 MON SEP 30 18 21 18 58 19 24 05 14 17 25 05 00 05 25 06 03 19 44 00 21 05 21 9.6 9.6 100 1140 0307 >90 ONE LINE REFERS TO EVENING DATE NEW MOON Sep 03 01:53 UT AND FOLLOWING MORNING. FIRST QUARTER Sep 11 06:06 UT All dates and times are zone HST FULL MOON Sep 18 02:36 UT in upper table (except sid time). LAST QUARTER Sep 24 18:49 UT