KECK OBSERVATORY CALENDAR FOR 2013 -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 2013 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 SUN DEC 01 17 52 18 32 18 59 06 11 17 04 05 23 05 50 06 30 23 22 04 24 09 48 10.4 10.4 100 1602-1829 >90 MON DEC 02 17 53 18 33 19 00 18 02 05 23 05 50 06 30 23 27 04 28 09 52 10.4 10.4 100 1704-1931 >90 TUE DEC 03 17 53 18 33 19 00 19 05 05 24 05 51 06 31 23 31 04 32 09 56 10.4 10.3 99 1807-1915 >90 WED DEC 04 17 53 18 33 19 00 20 09 05 24 05 51 06 32 23 35 04 36 10 00 10.4 9.3 88 1909-1739 >90 THU DEC 05 17 53 18 33 19 00 21 13 05 25 05 52 06 32 23 39 04 39 10 05 10.4 8.2 78 2009-1453 >90 FRI DEC 06 17 53 18 34 19 01 22 15 05 25 05 52 06 33 23 44 04 43 10 09 10.4 7.2 68 2106-1115 >90 SAT DEC 07 17 53 18 34 19 01 23 15 05 26 05 53 06 33 23 48 04 47 10 14 10.4 6.2 59 2201-0702 >90 SUN DEC 08 17 54 18 34 19 01 00 12 05 27 05 54 06 34 23 51 04 51 10 19 10.4 5.2 50 2256-0220 90 MON DEC 09 17 54 18 34 19 01 01 08 05 27 05 54 06 35 23 55 04 55 10 23 10.4 4.3 41 2345 0157 78 TUE DEC 10 17 54 18 35 19 02 02 03 05 28 05 55 06 35 00 00 04 59 10 28 10.4 3.4 32 0035 0618 65 WED DEC 11 17 55 18 35 19 02 02 56 05 28 05 55 06 36 00 04 05 03 10 32 10.4 2.5 24 0126 1016 53 THU DEC 12 17 55 18 35 19 03 14 24 03 50 05 29 05 56 06 36 00 09 05 07 10 37 10.4 1.6 15 0216 1342 41 FRI DEC 13 17 55 18 36 19 03 15 07 04 42 05 29 05 56 06 37 00 13 05 11 10 41 10.4 0.8 7 0307 1626 30 SAT DEC 14 17 56 18 36 19 03 15 52 05 34 05 30 05 57 06 38 00 17 05 15 10 46 10.5 0.0 0 0359 1822 18 SUN DEC 15 17 56 18 37 19 04 16 38 06 24 05 30 05 58 06 38 00 22 05 19 10 50 10.4 0.0 0 0451 1924 07 MON DEC 16 17 56 18 37 19 04 17 26 05 31 05 58 06 39 00 26 05 23 10 55 10.4 0.0 0 0543 1930 05 TUE DEC 17 17 57 18 37 19 05 18 16 05 32 05 59 06 39 00 31 05 27 11 00 10.4 0.0 0 0634 1843 16 WED DEC 18 17 57 18 38 19 05 19 05 05 32 05 59 06 40 00 35 05 31 11 04 10.4 0.0 0 0724 1705 27 THU DEC 19 17 58 18 38 19 05 19 55 05 33 06 00 06 40 00 39 05 35 11 09 10.5 0.8 7 0813 1443 38 FRI DEC 20 17 58 18 39 19 06 20 45 05 33 06 00 06 41 00 44 05 39 11 13 10.4 1.6 15 0900 1145 49 SAT DEC 21 17 59 18 39 19 06 21 34 05 34 06 01 06 41 00 48 05 43 11 17 10.5 2.5 23 0947 0817 60 SUN DEC 22 17 59 18 40 19 07 22 23 05 34 06 01 06 42 00 53 05 47 11 21 10.4 3.3 31 1033 0427 71 MON DEC 23 18 00 18 40 19 07 23 13 05 35 06 02 06 42 00 57 05 50 11 26 10.5 4.1 39 1119 0023 83 TUE DEC 24 18 00 18 41 19 08 00 03 05 35 06 02 06 43 01 02 05 54 11 30 10.5 4.9 47 1206-0342 >90 WED DEC 25 18 01 18 41 19 08 00 56 05 36 06 03 06 43 01 06 05 58 11 35 10.5 5.8 55 1255-0746 >90 THU DEC 26 18 01 18 42 19 09 01 51 05 36 06 03 06 44 01 10 06 02 11 39 10.5 6.7 64 1345-1135 >90 FRI DEC 27 18 02 18 42 19 10 02 48 05 36 06 04 06 44 01 15 06 06 11 43 10.4 7.6 73 1439-1456 >90 SAT DEC 28 18 02 18 43 19 10 03 49 14 48 05 37 06 04 06 44 01 19 06 10 11 48 10.5 8.7 82 1536-1733 >90 SUN DEC 29 18 03 18 44 19 11 04 52 15 42 05 37 06 04 06 45 01 24 06 14 11 52 10.4 9.7 92 1637-1909 >90 MON DEC 30 18 04 18 44 19 11 05 54 16 42 05 38 06 05 06 45 01 28 06 18 11 57 10.5 10.5 100 1739-1931 >90 TUE DEC 31 18 04 18 45 19 12 06 55 17 46 05 38 06 05 06 46 01 33 06 22 12 01 10.4 10.4 100 1842-1832 >90 ONE LINE REFERS TO EVENING DATE NEW MOON Dec 03 00:23 UT AND FOLLOWING MORNING. FIRST QUARTER Dec 09 15:11 UT All dates and times are zone HST FULL MOON Dec 17 09:27 UT in upper table (except sid time). LAST QUARTER Dec 25 13:49 UT