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 SAT MAY 01 18 55 19 35 20 03 03 01 14 56 04 35 05 03 05 42 10 21 14 18 18 54 8.5 7.0 81 2327-0058 >90 SUN MAY 02 18 56 19 36 20 03 03 36 15 47 04 34 05 02 05 42 10 25 14 22 18 57 8.5 7.6 88 0012 0448 >90 MON MAY 03 18 56 19 36 20 04 04 12 16 41 04 34 05 01 05 41 10 30 14 26 19 01 8.5 8.1 95 0059 1031 >90 TUE MAY 04 18 56 19 36 20 04 04 53 17 38 04 33 05 01 05 41 10 34 14 30 19 04 8.5 8.5 100 0150 1552 >90 WED MAY 05 18 57 19 37 20 05 05 39 18 38 04 32 05 00 05 40 10 39 14 34 19 07 8.4 8.4 100 0244 2032 >90 THU MAY 06 18 57 19 37 20 05 06 31 19 43 04 31 04 59 05 40 10 43 14 38 19 10 8.4 8.4 100 0343 2406 >90 FRI MAY 07 18 58 19 38 20 06 20 49 04 31 04 59 05 39 10 47 14 42 19 14 8.4 7.7 91 0445 2612 >90 SAT MAY 08 18 58 19 38 20 06 21 53 04 30 04 58 05 39 10 51 14 46 19 17 8.4 6.6 78 0549 2633 >90 SUN MAY 09 18 58 19 39 20 07 22 53 04 29 04 58 05 38 10 56 14 50 19 20 8.4 5.6 66 0653 2505 >90 MON MAY 10 18 59 19 39 20 08 23 47 04 29 04 57 05 38 11 01 14 54 19 24 8.3 4.7 56 0754 2156 >90 TUE MAY 11 18 59 19 40 20 08 00 34 04 28 04 57 05 37 11 05 14 58 19 27 8.3 3.9 46 0852 1723 86 WED MAY 12 19 00 19 40 20 09 01 16 04 28 04 56 05 37 11 10 15 02 19 31 8.3 3.2 38 0946 1159 76 THU MAY 13 19 00 19 41 20 09 01 55 04 27 04 55 05 36 11 14 15 06 19 34 8.3 2.5 30 1037 0557 67 FRI MAY 14 19 00 19 41 20 10 02 32 04 26 04 55 05 36 11 19 15 10 19 36 8.3 1.9 22 1126-0020 58 SAT MAY 15 19 01 19 42 20 10 14 42 03 09 04 26 04 55 05 35 11 23 15 14 19 40 8.3 1.3 15 1215-0632 51 SUN MAY 16 19 01 19 42 20 11 15 37 03 46 04 25 04 54 05 35 11 28 15 18 19 43 8.2 0.6 7 1304-1225 46 MON MAY 17 19 02 19 43 20 12 16 33 04 26 04 25 04 54 05 35 11 33 15 22 19 47 8.2 0.0 0 1355-1740 43 TUE MAY 18 19 02 19 43 20 12 17 29 05 09 04 24 04 53 05 34 11 37 15 25 19 50 8.2 0.0 0 1447-2202 43 WED MAY 19 19 03 19 44 20 13 18 26 05 55 04 24 04 53 05 34 11 42 15 29 19 54 8.2 0.0 0 1541-2518 45 THU MAY 20 19 03 19 44 20 13 19 23 06 45 04 23 04 52 05 34 11 46 15 33 19 57 8.2 0.0 0 1637-2716 50 FRI MAY 21 19 03 19 45 20 14 20 17 04 23 04 52 05 33 11 51 15 37 20 01 8.1 0.0 0 1733-2751 55 SAT MAY 22 19 04 19 45 20 14 21 08 04 23 04 52 05 33 11 55 15 41 20 05 8.1 0.9 11 1828-2704 62 SUN MAY 23 19 04 19 46 20 15 21 56 04 22 04 51 05 33 12 00 15 45 20 08 8.1 1.7 20 1921-2503 69 MON MAY 24 19 05 19 46 20 15 22 38 04 22 04 51 05 33 12 04 15 49 20 12 8.1 2.4 29 2011-2155 76 TUE MAY 25 19 05 19 47 20 16 23 17 04 21 04 51 05 32 12 08 15 53 20 15 8.1 3.0 37 2058-1757 84 WED MAY 26 19 06 19 47 20 17 23 52 04 21 04 50 05 32 12 13 15 57 20 19 8.1 3.6 44 2140-1300 >90 THU MAY 27 19 06 19 48 20 17 00 26 04 21 04 50 05 32 12 17 16 01 20 23 8.1 4.2 51 2228-0816 >90 FRI MAY 28 19 06 19 48 20 18 00 59 04 20 04 50 05 32 12 22 16 05 20 26 8.0 4.7 58 2312-0248 >90 SAT MAY 29 19 07 19 49 20 18 01 32 04 20 04 50 05 32 12 26 16 09 20 30 8.0 5.2 65 2356 0251 >90 SUN MAY 30 19 07 19 49 20 19 02 06 14 28 04 20 04 50 05 31 12 31 16 13 20 34 8.0 5.8 72 0042 0831 >90 MON MAY 31 19 08 19 50 20 19 02 44 15 22 04 20 04 49 05 31 12 35 16 17 20 37 8.0 6.4 80 0131 1357 >90 ONE LINE REFERS TO EVENING DATE NEW MOON May 06 10:58 UT AND FOLLOWING MORNING. FIRST QUARTER May 13 04:43 UT All dates and times are zone HST FULL MOON May 20 10:59 UT in upper table (except sid time). LAST QUARTER May 28 13:57 UT