KECK OBSERVATORY CALENDAR FOR 2037 -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 2037 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 WED APR 01 18 46 19 24 19 50 20 13 05 02 05 28 06 06 08 12 12 22 17 25 9.2 0.4 4 1441-1042 46 THU APR 02 18 46 19 24 19 50 21 13 05 01 05 27 06 05 08 16 12 26 17 28 9.2 1.4 15 1538-1451 58 FRI APR 03 18 47 19 24 19 51 22 12 05 00 05 26 06 04 08 21 12 30 17 31 9.1 2.4 25 1634-1802 71 SAT APR 04 18 47 19 25 19 51 23 09 04 59 05 25 06 03 08 25 12 34 17 34 9.1 3.3 36 1729-2005 83 SUN APR 05 18 47 19 25 19 51 00 03 04 58 05 24 06 02 08 29 12 38 17 37 9.1 4.2 46 1824-2107 >90 MON APR 06 18 47 19 25 19 52 00 54 04 57 05 23 06 01 08 33 12 42 17 40 9.1 5.0 55 1918-2102 >90 TUE APR 07 18 48 19 26 19 52 01 42 04 56 05 22 06 00 08 37 12 46 17 43 9.1 5.8 64 2009-1959 >90 WED APR 08 18 48 19 26 19 52 02 26 04 55 05 21 06 00 08 41 12 50 17 46 9.0 6.6 72 2059-1804 >90 THU APR 09 18 48 19 26 19 53 03 07 14 18 04 54 05 20 05 59 08 46 12 54 17 49 9.0 7.2 80 2147-1526 >90 FRI APR 10 18 48 19 27 19 53 03 46 15 07 04 53 05 20 05 58 08 50 12 58 17 52 9.0 7.9 87 2233-1212 >90 SAT APR 11 18 49 19 27 19 53 04 23 15 56 04 52 05 19 05 57 08 54 13 02 17 55 9.0 8.5 94 2318-0832 >90 SUN APR 12 18 49 19 27 19 54 04 59 16 45 04 51 05 18 05 56 08 59 13 06 17 58 9.0 9.0 100 0002-0431 >90 MON APR 13 18 49 19 28 19 54 05 35 17 33 04 50 05 17 05 55 09 03 13 10 18 01 8.9 8.9 100 0047-0019 >90 TUE APR 14 18 50 19 28 19 55 06 11 18 22 04 50 05 16 05 55 09 08 13 14 18 05 8.9 8.9 100 0132 0357 >90 WED APR 15 18 50 19 29 19 55 06 49 19 13 04 49 05 15 05 54 09 12 13 18 18 07 8.9 8.9 100 0218 0806 >90 THU APR 16 18 50 19 29 19 56 20 05 04 48 05 14 05 53 09 17 13 22 18 10 8.9 8.7 98 0305 1159 >90 FRI APR 17 18 51 19 29 19 56 20 58 04 47 05 14 05 52 09 21 13 26 18 13 8.9 7.8 88 0355 1523 >90 SAT APR 18 18 51 19 30 19 56 21 53 04 46 05 13 05 51 09 25 13 29 18 16 8.8 6.9 77 0447 1806 >90 SUN APR 19 18 51 19 30 19 57 22 50 04 45 05 12 05 51 09 30 13 33 18 19 8.8 5.9 67 0542 1956 >90 MON APR 20 18 52 19 30 19 57 23 46 04 44 05 11 05 50 09 34 13 37 18 22 8.8 5.0 56 0639 2041 >90 TUE APR 21 18 52 19 31 19 58 00 42 04 43 05 10 05 49 09 39 13 41 18 25 8.7 4.0 45 0737 2011 84 WED APR 22 18 52 19 31 19 58 01 35 04 42 05 09 05 49 09 43 13 45 18 28 8.7 3.1 35 0835 1832 72 THU APR 23 18 53 19 32 19 59 02 25 04 42 05 09 05 48 09 48 13 49 18 32 8.7 2.3 26 0934 1540 61 FRI APR 24 18 53 19 32 19 59 03 14 04 41 05 08 05 47 09 51 13 53 18 35 8.7 1.5 16 1031 1145 49 SAT APR 25 18 53 19 32 20 00 14 50 04 00 04 40 05 07 05 46 09 56 13 57 18 38 8.7 0.7 7 1128 0701 38 SUN APR 26 18 54 19 33 20 00 15 52 04 45 04 39 05 06 05 46 10 00 14 01 18 41 8.7 0.0 0 1224 0148 30 MON APR 27 18 54 19 33 20 01 16 53 05 30 04 38 05 06 05 45 10 05 14 05 18 44 8.6 0.0 0 1319-0334 26 TUE APR 28 18 54 19 34 20 01 17 54 06 15 04 37 05 05 05 44 10 09 14 09 18 47 8.6 0.0 0 1415-0843 29 WED APR 29 18 55 19 34 20 02 18 54 04 37 05 04 05 44 10 14 14 13 18 51 8.6 0.0 0 1512-1319 36 THU APR 30 18 55 19 35 20 02 19 55 04 36 05 03 05 43 10 18 14 17 18 54 8.6 0.0 0 1609-1703 46 ONE LINE REFERS TO EVENING DATE LAST QUARTER Apr 07 11:26 UT AND FOLLOWING MORNING. NEW MOON Apr 15 16:11 UT All dates and times are zone HST FIRST QUARTER Apr 23 03:12 UT in upper table (except sid time). FULL MOON Apr 29 18:56 UT