KECK OBSERVATORY CALENDAR FOR 2015 -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 2015 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 JAN 01 18 05 18 45 19 12 15 13 04 54 05 39 06 06 06 46 01 36 06 25 12 05 10.4 0.8 7 0430 1745 27 FRI JAN 02 18 06 18 46 19 13 16 03 05 47 05 39 06 06 06 46 01 41 06 29 12 09 10.4 0.0 0 0525 1835 15 SAT JAN 03 18 06 18 47 19 14 16 54 06 37 05 39 06 06 06 47 01 46 06 33 12 13 10.4 0.0 0 0619 1826 03 SUN JAN 04 18 07 18 47 19 14 17 45 05 40 06 07 06 47 01 50 06 37 12 18 10.4 0.0 0 0712 1721 09 MON JAN 05 18 07 18 48 19 15 18 37 05 40 06 07 06 47 01 55 06 41 12 22 10.4 0.0 0 0804 1527 20 TUE JAN 06 18 08 18 48 19 15 19 28 05 40 06 07 06 47 01 59 06 45 12 26 10.4 0.2 2 0853 1253 32 WED JAN 07 18 09 18 49 19 16 20 17 05 41 06 07 06 48 02 04 06 49 12 31 10.4 1.0 9 0941 0948 43 THU JAN 08 18 09 18 50 19 16 21 06 05 41 06 08 06 48 02 08 06 53 12 35 10.4 1.8 17 1027 0621 54 FRI JAN 09 18 10 18 50 19 17 21 55 05 41 06 08 06 48 02 13 06 57 12 38 10.4 2.6 25 1113 0239 65 SAT JAN 10 18 11 18 51 19 18 22 43 05 41 06 08 06 48 02 18 07 00 12 42 10.4 3.4 32 1158-0106 76 SUN JAN 11 18 11 18 51 19 18 23 31 05 42 06 08 06 48 02 22 07 04 12 47 10.4 4.2 40 1242-0448 87 MON JAN 12 18 12 18 52 19 19 00 21 05 42 06 09 06 49 02 27 07 08 12 51 10.4 5.0 48 1330-0829 >90 TUE JAN 13 18 12 18 53 19 19 01 12 05 42 06 09 06 49 02 31 07 12 12 55 10.4 5.9 56 1418-1148 >90 WED JAN 14 18 13 18 53 19 20 02 05 05 42 06 09 06 49 02 35 07 16 12 59 10.4 6.7 65 1509-1439 >90 THU JAN 15 18 14 18 54 19 20 03 00 14 04 05 42 06 09 06 49 02 39 07 20 13 03 10.4 7.7 73 1602-1652 >90 FRI JAN 16 18 14 18 54 19 21 03 58 14 54 05 42 06 09 06 49 02 44 07 24 13 07 10.3 8.6 83 1658-1815 >90 SAT JAN 17 18 15 18 55 19 22 04 56 15 49 05 42 06 09 06 49 02 49 07 28 13 11 10.3 9.6 92 1756-1837 >90 SUN JAN 18 18 16 18 55 19 22 05 54 16 49 05 43 06 09 06 49 02 53 07 32 13 16 10.3 10.3 100 1856-1749 >90 MON JAN 19 18 16 18 56 19 23 06 49 17 51 05 43 06 09 06 49 02 58 07 36 13 20 10.3 10.3 100 1957-1551 >90 TUE JAN 20 18 17 18 57 19 23 18 55 05 43 06 09 06 49 03 02 07 40 13 24 10.3 10.3 100 2056-1250 >90 WED JAN 21 18 18 18 57 19 24 19 59 05 43 06 09 06 49 03 07 07 44 13 28 10.3 9.7 94 2155-0858 >90 THU JAN 22 18 18 18 58 19 24 21 02 05 43 06 09 06 49 03 11 07 48 13 32 10.3 8.7 84 2252-0435 >90 FRI JAN 23 18 19 18 58 19 25 22 03 05 43 06 09 06 49 03 16 07 52 13 36 10.3 7.7 74 2347 0001 >90 SAT JAN 24 18 19 18 59 19 25 23 03 05 43 06 09 06 49 03 20 07 56 13 40 10.3 6.7 64 0041 0430 >90 SUN JAN 25 18 20 18 59 19 26 00 02 05 43 06 09 06 48 03 25 08 00 13 44 10.3 5.7 55 0141 0807 >90 MON JAN 26 18 21 19 00 19 26 00 59 05 43 06 09 06 48 03 29 08 04 13 47 10.3 4.7 46 0229 1213 80 TUE JAN 27 18 21 19 01 19 27 01 55 05 42 06 09 06 48 03 34 08 07 13 50 10.2 3.8 36 0323 1505 68 WED JAN 28 18 22 19 01 19 27 02 50 05 42 06 09 06 48 03 38 08 11 13 54 10.2 2.9 27 0417 1707 55 THU JAN 29 18 22 19 02 19 28 14 00 03 43 05 42 06 08 06 48 03 43 08 15 13 58 10.2 2.0 19 0511 1814 44 FRI JAN 30 18 23 19 02 19 28 14 50 04 33 05 42 06 08 06 47 03 47 08 19 14 02 10.2 1.1 11 0604 1823 32 SAT JAN 31 18 24 19 03 19 29 15 41 05 21 05 42 06 08 06 47 03 52 08 23 14 06 10.2 0.3 3 0657 1738 21 ONE LINE REFERS TO EVENING DATE FULL MOON Jan 05 04:53 UT AND FOLLOWING MORNING. LAST QUARTER Jan 13 09:48 UT All dates and times are zone HST NEW MOON Jan 20 13:13 UT in upper table (except sid time). FIRST QUARTER Jan 27 04:49 UT