KECK OBSERVATORY CALENDAR FOR 2011 -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 2011 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 DEC 01 17 52 18 32 18 59 00 22 05 23 05 50 06 30 23 20 04 22 09 46 10.4 5.0 48 2235-0310 88 FRI DEC 02 17 53 18 33 19 00 01 11 05 23 05 50 06 30 23 25 04 26 09 50 10.4 4.2 40 2319 0120 77 SAT DEC 03 17 53 18 33 19 00 02 00 05 24 05 51 06 31 23 29 04 30 09 54 10.4 3.4 32 0004 0553 66 SUN DEC 04 17 53 18 33 19 00 02 48 05 24 05 51 06 32 23 33 04 34 09 58 10.4 2.6 25 0049 1011 55 MON DEC 05 17 53 18 33 19 00 14 14 03 38 05 25 05 52 06 32 23 37 04 37 10 03 10.4 1.8 17 0135 1406 44 TUE DEC 06 17 53 18 34 19 00 14 52 04 29 05 25 05 52 06 33 23 41 04 41 10 07 10.4 0.9 8 0223 1728 33 WED DEC 07 17 53 18 34 19 01 15 33 05 21 05 26 05 53 06 33 23 46 04 45 10 12 10.4 0.1 0 0313 2006 22 THU DEC 08 17 54 18 34 19 01 16 17 06 13 05 27 05 54 06 34 23 49 04 49 10 17 10.4 0.0 0 0405 2152 11 FRI DEC 09 17 54 18 34 19 01 17 06 05 27 05 54 06 35 23 53 04 53 10 21 10.4 0.0 0 0458 2235 03 SAT DEC 10 17 54 18 35 19 02 17 57 05 28 05 55 06 35 23 58 04 57 10 26 10.4 0.0 0 0553 2211 13 SUN DEC 11 17 55 18 35 19 02 18 52 05 28 05 55 06 36 00 02 05 01 10 30 10.4 0.0 0 0648 2037 25 MON DEC 12 17 55 18 35 19 03 19 47 05 29 05 56 06 36 00 07 05 05 10 35 10.4 0.7 7 0742 1759 37 TUE DEC 13 17 55 18 36 19 03 20 44 05 29 05 56 06 37 00 11 05 09 10 39 10.4 1.7 16 0835 1423 49 WED DEC 14 17 56 18 36 19 03 21 40 05 30 05 57 06 38 00 15 05 13 10 44 10.5 2.6 25 0926 1001 62 THU DEC 15 17 56 18 37 19 04 22 36 05 30 05 58 06 38 00 20 05 17 10 48 10.4 3.5 33 1017 0506 74 FRI DEC 16 17 56 18 37 19 04 23 33 05 31 05 58 06 39 00 24 05 21 10 53 10.4 4.5 42 1107-0001 87 SAT DEC 17 17 57 18 37 19 05 00 30 05 32 05 59 06 39 00 29 05 25 10 58 10.4 5.4 51 1200-0523 >90 SUN DEC 18 17 57 18 38 19 05 01 29 05 32 05 59 06 40 00 33 05 29 11 02 10.4 6.4 61 1253-1027 >90 MON DEC 19 17 58 18 38 19 05 02 30 05 33 06 00 06 40 00 37 05 33 11 07 10.5 7.4 70 1348-1500 >90 TUE DEC 20 17 58 18 39 19 06 03 34 14 29 05 33 06 00 06 41 00 42 05 37 11 11 10.4 8.5 81 1446-1842 >90 WED DEC 21 17 59 18 39 19 06 04 38 15 22 05 34 06 01 06 41 00 46 05 41 11 15 10.5 9.5 91 1547-2116 >90 THU DEC 22 17 59 18 40 19 07 05 41 16 20 05 34 06 01 06 42 00 51 05 44 11 19 10.4 10.4 100 1648-2227 >90 FRI DEC 23 18 00 18 40 19 07 06 41 17 21 05 35 06 02 06 42 00 55 05 48 11 24 10.5 10.5 100 1750-2209 >90 SAT DEC 24 18 00 18 41 19 08 18 23 05 35 06 02 06 43 01 00 05 52 11 28 10.5 10.5 100 1850-2027 >90 SUN DEC 25 18 01 18 41 19 08 19 25 05 36 06 03 06 43 01 04 05 56 11 33 10.5 10.2 97 1947-1736 >90 MON DEC 26 18 01 18 42 19 09 20 23 05 36 06 03 06 44 01 08 06 00 11 37 10.5 9.2 88 2040-1352 >90 TUE DEC 27 18 02 18 42 19 10 21 19 05 36 06 04 06 44 01 13 06 04 11 41 10.4 8.3 79 2131-0935 >90 WED DEC 28 18 02 18 43 19 10 22 12 05 37 06 04 06 44 01 17 06 08 11 46 10.5 7.4 70 2218-0459 >90 THU DEC 29 18 03 18 44 19 11 23 03 05 37 06 04 06 45 01 22 06 12 11 50 10.4 6.6 62 2304-0017 >90 FRI DEC 30 18 04 18 44 19 11 23 52 05 38 06 05 06 45 01 26 06 16 11 55 10.5 5.8 55 2349 0420 >90 SAT DEC 31 18 04 18 45 19 12 00 41 05 38 06 05 06 46 01 31 06 20 11 59 10.4 4.9 47 0034 0840 84 ONE LINE REFERS TO EVENING DATE FIRST QUARTER Dec 02 09:52 UT AND FOLLOWING MORNING. FULL MOON Dec 10 14:37 UT All dates and times are zone HST LAST QUARTER Dec 18 00:47 UT in upper table (except sid time). NEW MOON Dec 24 18:06 UT