KECK OBSERVATORY CALENDAR FOR 2050 -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 2050 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 FRI APR 01 18 46 19 24 19 50 14 10 03 25 05 02 05 28 06 06 08 11 12 22 17 25 9.2 1.6 17 0914 1011 46 SAT APR 02 18 46 19 24 19 50 14 59 04 01 05 01 05 27 06 05 08 15 12 26 17 28 9.2 1.0 10 1000 0621 38 SUN APR 03 18 47 19 24 19 51 15 47 04 37 05 00 05 26 06 04 08 20 12 30 17 31 9.1 0.4 4 1045 0213 31 MON APR 04 18 47 19 25 19 51 16 36 05 13 04 59 05 25 06 03 08 24 12 34 17 34 9.1 0.0 0 1131-0203 27 TUE APR 05 18 47 19 25 19 51 17 25 05 49 04 58 05 24 06 02 08 28 12 38 17 36 9.1 0.0 0 1217-0618 27 WED APR 06 18 47 19 25 19 52 18 15 06 28 04 57 05 23 06 01 08 33 12 42 17 39 9.1 0.0 0 1305-1021 31 THU APR 07 18 48 19 26 19 52 19 07 04 56 05 22 06 00 08 37 12 46 17 42 9.1 0.0 0 1354-1402 38 FRI APR 08 18 48 19 26 19 52 20 00 04 55 05 21 06 00 08 41 12 49 17 45 9.0 0.1 1 1446-1708 47 SAT APR 09 18 48 19 26 19 53 20 55 04 54 05 20 05 59 08 46 12 53 17 48 9.0 1.0 11 1540-1925 57 SUN APR 10 18 48 19 27 19 53 21 50 04 53 05 20 05 58 08 50 12 57 17 51 9.0 2.0 21 1636-2044 67 MON APR 11 18 49 19 27 19 53 22 46 04 52 05 19 05 57 08 54 13 01 17 54 9.0 2.9 32 1733-2053 78 TUE APR 12 18 49 19 27 19 54 23 40 04 51 05 18 05 56 08 59 13 05 17 57 9.0 3.8 42 1829-1946 89 WED APR 13 18 49 19 28 19 54 00 32 04 50 05 17 05 55 09 03 13 09 18 00 8.9 4.6 51 1928-1747 >90 THU APR 14 18 50 19 28 19 55 01 22 04 50 05 16 05 55 09 07 13 13 18 04 8.9 5.5 61 2024-1436 >90 FRI APR 15 18 50 19 29 19 55 02 09 04 49 05 15 05 54 09 11 13 17 18 07 8.9 6.2 70 2120-1033 >90 SAT APR 16 18 50 19 29 19 56 02 55 14 29 04 48 05 14 05 53 09 16 13 21 18 10 8.9 7.0 78 2215-0554 >90 SUN APR 17 18 51 19 29 19 56 03 40 15 29 04 47 05 14 05 52 09 20 13 25 18 13 8.9 7.7 87 2309-0055 >90 MON APR 18 18 51 19 30 19 56 04 25 16 30 04 46 05 13 05 51 09 24 13 29 18 16 8.8 8.5 96 0003 0407 >90 TUE APR 19 18 51 19 30 19 57 05 11 17 31 04 45 05 12 05 51 09 29 13 33 18 19 8.8 8.8 100 0058 0852 >90 WED APR 20 18 52 19 30 19 57 05 59 18 33 04 44 05 11 05 50 09 33 13 37 18 22 8.8 8.8 100 0154 1302 >90 THU APR 21 18 52 19 31 19 58 06 49 19 34 04 43 05 10 05 49 09 38 13 41 18 25 8.7 8.7 100 0250 1622 >90 FRI APR 22 18 52 19 31 19 58 20 34 04 42 05 09 05 49 09 42 13 45 18 27 8.7 8.1 93 0346 1839 >90 SAT APR 23 18 53 19 32 19 59 21 32 04 42 05 09 05 48 09 47 13 49 18 31 8.7 7.2 82 0443 1950 >90 SUN APR 24 18 53 19 32 19 59 22 26 04 41 05 08 05 47 09 51 13 53 18 34 8.7 6.3 71 0538 1953 >90 MON APR 25 18 53 19 32 20 00 23 16 04 40 05 07 05 46 09 56 13 57 18 37 8.7 5.4 62 0631 1854 >90 TUE APR 26 18 54 19 33 20 00 00 02 04 39 05 06 05 46 10 00 14 00 18 40 8.7 4.6 53 0728 1627 >90 WED APR 27 18 54 19 33 20 01 00 44 04 38 05 06 05 45 10 05 14 04 18 43 8.6 3.9 45 0812 1420 84 THU APR 28 18 54 19 34 20 01 01 23 04 37 05 05 05 44 10 09 14 08 18 46 8.6 3.2 37 0859 1107 74 FRI APR 29 18 55 19 34 20 02 02 00 04 37 05 04 05 44 10 14 14 12 18 50 8.6 2.6 30 0945 0726 66 SAT APR 30 18 55 19 35 20 02 02 35 04 36 05 03 05 43 10 18 14 16 18 53 8.6 2.0 23 1030 0326 57 ONE LINE REFERS TO EVENING DATE FULL MOON Apr 07 08:14 UT AND FOLLOWING MORNING. LAST QUARTER Apr 14 18:24 UT All dates and times are zone HST NEW MOON Apr 21 10:27 UT in upper table (except sid time). FIRST QUARTER Apr 28 22:09 UT