KECK OBSERVATORY CALENDAR FOR 2031 -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 2031 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 MAR 01 18 37 19 15 19 40 02 08 05 28 05 54 06 32 05 57 10 18 15 47 9.8 3.3 34 0536 2109 66 SUN MAR 02 18 37 19 15 19 41 02 54 05 28 05 53 06 31 06 02 10 22 15 51 9.8 2.6 26 0626 2013 55 MON MAR 03 18 38 19 15 19 41 03 37 05 27 05 52 06 30 06 06 10 26 15 54 9.8 1.8 18 0717 1821 45 TUE MAR 04 18 38 19 16 19 41 14 45 04 19 05 26 05 52 06 29 06 10 10 30 15 57 9.8 1.1 11 0806 1538 34 WED MAR 05 18 38 19 16 19 41 15 37 04 58 05 25 05 51 06 28 06 14 10 34 16 00 9.7 0.4 4 0855 1210 25 THU MAR 06 18 39 19 16 19 42 16 29 05 37 05 25 05 50 06 28 06 19 10 38 16 04 9.7 0.0 0 0944 0805 18 FRI MAR 07 18 39 19 17 19 42 17 21 06 15 05 24 05 49 06 27 06 23 10 42 16 07 9.7 0.0 0 1032 0333 16 SAT MAR 08 18 39 19 17 19 42 18 14 06 54 05 23 05 49 06 26 06 27 10 46 16 10 9.7 0.0 0 1122-0115 23 SUN MAR 09 18 40 19 17 19 43 19 08 05 22 05 48 06 25 06 32 10 50 16 13 9.6 0.0 0 1212-0605 33 MON MAR 10 18 40 19 17 19 43 20 04 05 21 05 47 06 24 06 36 10 54 16 15 9.6 0.4 3 1304-1043 44 TUE MAR 11 18 40 19 18 19 43 21 02 05 21 05 46 06 24 06 40 10 58 16 19 9.6 1.3 13 1357-1451 56 WED MAR 12 18 40 19 18 19 44 22 01 05 20 05 45 06 23 06 45 11 01 16 22 9.6 2.3 23 1454-1812 69 THU MAR 13 18 41 19 18 19 44 23 01 05 19 05 44 06 22 06 49 11 05 16 25 9.6 3.3 34 1552-2028 81 FRI MAR 14 18 41 19 19 19 44 00 01 05 18 05 44 06 21 06 53 11 09 16 28 9.6 4.3 44 1652-2135 >90 SAT MAR 15 18 41 19 19 19 44 01 00 05 17 05 43 06 20 06 57 11 13 16 31 9.5 5.3 55 1753-2120 >90 SUN MAR 16 18 42 19 19 19 45 01 55 05 16 05 42 06 19 07 02 11 17 16 34 9.5 6.2 64 1853-1946 >90 MON MAR 17 18 42 19 19 19 45 02 48 05 15 05 41 06 19 07 05 11 21 16 37 9.5 7.0 74 1951-1701 >90 TUE MAR 18 18 42 19 20 19 45 03 36 14 47 05 15 05 40 06 18 07 09 11 25 16 41 9.5 7.8 82 2047-1318 >90 WED MAR 19 18 42 19 20 19 46 04 21 15 47 05 14 05 39 06 17 07 14 11 29 16 44 9.5 8.6 90 2141-0853 >90 THU MAR 20 18 43 19 20 19 46 05 04 16 46 05 13 05 38 06 16 07 18 11 33 16 47 9.5 9.3 98 2233-0405 >90 FRI MAR 21 18 43 19 21 19 46 05 45 17 43 05 12 05 38 06 15 07 22 11 37 16 50 9.4 9.4 100 2324 0051 >90 SAT MAR 22 18 43 19 21 19 47 06 26 18 40 05 11 05 37 06 14 07 27 11 41 16 53 9.4 9.4 100 0014 0539 >90 SUN MAR 23 18 44 19 21 19 47 19 35 05 10 05 36 06 13 07 31 11 45 16 56 9.4 9.4 100 0104 1003 >90 MON MAR 24 18 44 19 21 19 47 20 31 05 09 05 35 06 12 07 35 11 49 16 59 9.4 8.6 92 0154 1353 >90 TUE MAR 25 18 44 19 22 19 47 21 25 05 08 05 34 06 12 07 39 11 53 17 02 9.4 7.7 82 0245 1659 >90 WED MAR 26 18 44 19 22 19 48 22 18 05 07 05 33 06 11 07 44 11 57 17 04 9.3 6.8 73 0336 1913 >90 THU MAR 27 18 45 19 22 19 48 23 10 05 06 05 32 06 10 07 48 12 01 17 07 9.3 5.9 63 0427 2031 >90 FRI MAR 28 18 45 19 23 19 48 00 00 05 05 05 31 06 09 07 52 12 05 17 10 9.3 5.1 54 0518 2052 >90 SAT MAR 29 18 45 19 23 19 49 00 47 05 05 05 30 06 08 07 57 12 08 17 14 9.3 4.3 46 0609 2013 83 SUN MAR 30 18 45 19 23 19 49 01 31 05 04 05 29 06 07 08 01 12 12 17 17 9.2 3.5 38 0659 1843 73 MON MAR 31 18 46 19 24 19 49 02 13 05 03 05 29 06 06 08 05 12 16 17 20 9.2 2.8 30 0748 1621 63 ONE LINE REFERS TO EVENING DATE FIRST QUARTER Mar 01 04:02 UT AND FOLLOWING MORNING. FULL MOON Mar 09 04:30 UT All dates and times are zone HST LAST QUARTER Mar 16 06:36 UT in upper table (except sid time). NEW MOON Mar 23 03:50 UT FIRST QUARTER Mar 31 00:31 UT