KECK OBSERVATORY CALENDAR FOR 2018 -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 2018 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 THU MAR 01 18 37 19 15 19 40 18 23 05 28 05 54 06 32 05 58 10 19 15 48 9.8 0.0 0 1117 0734 19 FRI MAR 02 18 37 19 15 19 41 19 22 05 28 05 53 06 31 06 03 10 23 15 52 9.8 0.0 0 1211 0249 31 SAT MAR 03 18 38 19 15 19 41 20 19 05 27 05 52 06 30 06 07 10 27 15 54 9.8 0.6 6 1303-0158 44 SUN MAR 04 18 38 19 16 19 41 21 14 05 26 05 52 06 29 06 11 10 31 15 57 9.8 1.6 15 1354-0631 57 MON MAR 05 18 38 19 16 19 41 22 08 05 25 05 51 06 28 06 15 10 34 16 00 9.7 2.5 25 1444-1038 69 TUE MAR 06 18 39 19 16 19 42 23 00 05 25 05 50 06 28 06 20 10 38 16 04 9.7 3.3 33 1534-1404 80 WED MAR 07 18 39 19 17 19 42 23 52 05 24 05 49 06 27 06 24 10 42 16 07 9.7 4.2 42 1620-1630 >90 THU MAR 08 18 39 19 17 19 42 00 43 05 23 05 49 06 26 06 28 10 46 16 10 9.7 5.0 51 1714-1852 >90 FRI MAR 09 18 40 19 17 19 43 01 32 05 22 05 48 06 25 06 33 10 50 16 13 9.6 5.8 60 1804-2000 >90 SAT MAR 10 18 40 19 17 19 43 02 21 05 21 05 47 06 24 06 36 10 54 16 16 9.6 6.6 68 1854-2015 >90 SUN MAR 11 18 40 19 18 19 43 03 07 14 04 05 21 05 46 06 24 06 40 10 58 16 20 9.6 7.4 76 1944-1938 >90 MON MAR 12 18 40 19 18 19 44 03 52 14 53 05 20 05 45 06 23 06 45 11 02 16 23 9.6 8.1 84 2033-1810 >90 TUE MAR 13 18 41 19 18 19 44 04 36 15 44 05 19 05 44 06 22 06 49 11 06 16 26 9.6 8.9 92 2122-1554 >90 WED MAR 14 18 41 19 19 19 44 05 18 16 35 05 18 05 44 06 21 06 53 11 10 16 29 9.6 9.6 100 2211-1255 >90 THU MAR 15 18 41 19 19 19 44 05 58 17 27 05 17 05 43 06 20 06 57 11 14 16 32 9.5 9.5 100 2259-0920 >90 FRI MAR 16 18 42 19 19 19 45 06 38 18 20 05 16 05 42 06 19 07 02 11 18 16 35 9.5 9.5 100 2347-0516 >90 SAT MAR 17 18 42 19 19 19 45 19 13 05 15 05 41 06 19 07 06 11 22 16 38 9.5 9.5 100 0036-0053 >90 SUN MAR 18 18 42 19 20 19 45 20 07 05 15 05 40 06 18 07 10 11 26 16 42 9.5 9.1 96 0125 0337 >90 MON MAR 19 18 42 19 20 19 46 21 03 05 14 05 39 06 17 07 15 11 30 16 45 9.5 8.2 86 0215 0800 >90 TUE MAR 20 18 43 19 20 19 46 22 00 05 13 05 38 06 16 07 19 11 34 16 47 9.5 7.2 76 0308 1203 >90 WED MAR 21 18 43 19 21 19 46 22 59 05 12 05 38 06 15 07 23 11 38 16 50 9.4 6.2 65 0403 1531 >90 THU MAR 22 18 43 19 21 19 47 23 59 05 11 05 37 06 14 07 28 11 41 16 53 9.4 5.2 55 0500 1807 >90 FRI MAR 23 18 44 19 21 19 47 01 00 05 10 05 36 06 13 07 32 11 45 16 56 9.4 4.2 44 0559 1937 80 SAT MAR 24 18 44 19 21 19 47 01 58 05 09 05 35 06 12 07 36 11 49 16 59 9.4 3.2 33 0700 1956 68 SUN MAR 25 18 44 19 22 19 47 02 55 05 08 05 34 06 12 07 40 11 53 17 02 9.4 2.2 23 0800 1856 55 MON MAR 26 18 44 19 22 19 48 14 06 03 48 05 07 05 33 06 11 07 45 11 57 17 05 9.3 1.3 14 0900 1642 42 TUE MAR 27 18 45 19 22 19 48 15 07 04 37 05 06 05 32 06 10 07 48 12 01 17 08 9.3 0.5 5 0958 1325 30 WED MAR 28 18 45 19 23 19 48 16 08 05 23 05 05 05 31 06 09 07 52 12 05 17 11 9.3 0.0 0 1054 0918 20 THU MAR 29 18 45 19 23 19 49 17 07 06 06 05 05 05 30 06 08 07 57 12 09 17 15 9.3 0.0 0 1148 0442 16 FRI MAR 30 18 45 19 23 19 49 18 04 06 48 05 04 05 29 06 07 08 01 12 13 17 18 9.2 0.0 0 1241-0007 21 SAT MAR 31 18 46 19 24 19 49 19 00 05 03 05 29 06 06 08 05 12 17 17 21 9.2 0.0 0 1333-0450 31 ONE LINE REFERS TO EVENING DATE FULL MOON Mar 02 00:51 UT AND FOLLOWING MORNING. LAST QUARTER Mar 09 11:20 UT All dates and times are zone HST NEW MOON Mar 17 13:12 UT in upper table (except sid time). FIRST QUARTER Mar 24 15:35 UT FULL MOON Mar 31 12:39 UT