KECK OBSERVATORY CALENDAR FOR 2027 -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 2027 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 MON FEB 01 18 24 19 03 19 29 04 00 14 27 05 42 06 08 06 47 03 56 08 28 14 11 10.2 8.5 83 1750-2737 >90 TUE FEB 02 18 25 19 04 19 30 04 48 15 20 05 41 06 08 06 46 04 01 08 32 14 13 10.2 9.3 91 1842-2634 >90 WED FEB 03 18 25 19 04 19 30 05 33 16 13 05 41 06 07 06 46 04 05 08 35 14 17 10.2 10.1 98 1933-2421 >90 THU FEB 04 18 26 19 05 19 31 06 13 17 05 05 41 06 07 06 46 04 10 08 39 14 21 10.2 10.2 100 2022-2107 >90 FRI FEB 05 18 26 19 05 19 31 06 51 17 58 05 41 06 07 06 45 04 14 08 43 14 25 10.2 10.2 100 2109-1700 >90 SAT FEB 06 18 27 19 06 19 32 18 49 05 40 06 06 06 45 04 19 08 47 14 28 10.1 10.1 100 2154-1213 >90 SUN FEB 07 18 27 19 06 19 32 19 39 05 40 06 06 06 45 04 22 08 51 14 32 10.1 10.0 98 2238-0655 >90 MON FEB 08 18 28 19 07 19 32 20 29 05 40 06 06 06 44 04 26 08 55 14 36 10.1 9.2 90 2321-0118 >90 TUE FEB 09 18 28 19 07 19 33 21 20 05 39 06 05 06 44 04 31 08 59 14 39 10.1 8.3 82 0005 0428 >90 WED FEB 10 18 29 19 07 19 33 22 12 05 39 06 05 06 43 04 35 09 03 14 43 10.1 7.4 73 0051 1010 >90 THU FEB 11 18 29 19 08 19 34 23 07 05 39 06 04 06 43 04 40 09 07 14 47 10.1 6.5 64 0139 1533 >90 FRI FEB 12 18 30 19 08 19 34 00 06 05 38 06 04 06 42 04 44 09 11 14 50 10.1 5.5 54 0236 1953 >90 SAT FEB 13 18 30 19 09 19 35 01 07 05 38 06 04 06 42 04 49 09 15 14 54 10.0 4.5 44 0328 2413 79 SUN FEB 14 18 31 19 09 19 35 02 12 05 37 06 03 06 41 04 53 09 19 14 57 10.0 3.4 34 0429 2647 66 MON FEB 15 18 31 19 10 19 35 03 16 05 37 06 03 06 41 04 57 09 23 15 01 10.0 2.4 23 0533 2739 53 TUE FEB 16 18 32 19 10 19 36 04 17 05 36 06 02 06 40 05 02 09 27 15 04 10.0 1.3 13 0639 2635 39 WED FEB 17 18 32 19 10 19 36 15 04 05 12 05 36 06 01 06 40 05 06 09 31 15 08 10.0 0.4 4 0744 2337 25 THU FEB 18 18 33 19 11 19 36 16 12 06 02 05 35 06 01 06 39 05 10 09 35 15 11 10.0 0.0 0 0846 1900 11 FRI FEB 19 18 33 19 11 19 37 17 19 06 46 05 35 06 00 06 38 05 15 09 39 15 14 10.0 0.0 0 0944 1309 07 SAT FEB 20 18 33 19 11 19 37 18 22 05 34 06 00 06 38 05 19 09 42 15 17 9.9 0.0 0 1039 0636 19 SUN FEB 21 18 34 19 12 19 38 19 23 05 34 05 59 06 37 05 24 09 46 15 21 9.9 0.0 0 1131-0011 33 MON FEB 22 18 34 19 12 19 38 20 21 05 33 05 59 06 36 05 28 09 50 15 24 9.9 0.7 7 1222-0647 46 TUE FEB 23 18 35 19 13 19 38 21 18 05 32 05 58 06 36 05 32 09 54 15 27 9.9 1.7 16 1313-1251 59 WED FEB 24 18 35 19 13 19 39 22 14 05 32 05 57 06 35 05 37 09 58 15 31 9.9 2.6 26 1404-1808 71 THU FEB 25 18 35 19 13 19 39 23 11 05 31 05 57 06 34 05 40 10 02 15 34 9.9 3.5 35 1455-2218 83 FRI FEB 26 18 36 19 14 19 39 00 06 05 30 05 56 06 34 05 44 10 06 15 37 9.9 4.5 45 1548-2527 >90 SAT FEB 27 18 36 19 14 19 40 01 01 05 30 05 55 06 33 05 49 10 10 15 41 9.8 5.4 54 1642-2717 >90 SUN FEB 28 18 37 19 14 19 40 01 54 05 29 05 55 06 32 05 53 10 14 15 44 9.8 6.2 63 1736-2750 >90 ONE LINE REFERS TO EVENING DATE NEW MOON Feb 06 15:57 UT AND FOLLOWING MORNING. FIRST QUARTER Feb 14 07:58 UT All dates and times are zone HST FULL MOON Feb 20 23:22 UT in upper table (except sid time). LAST QUARTER Feb 28 05:16 UT