KECK OBSERVATORY CALENDAR FOR 2011 -NAUTICAL (computed for altitude 4160.0 m) NAUTICAL(12 deg) TWILIGHT/DAWN MOON(midnight) DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (12 deg) Zenith 2011 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ RA DEC Dist 12 18 18 12 12 12 h h % h m d m deg TUE FEB 01 18 24 19 03 19 29 06 25 17 33 05 42 06 08 06 47 03 29 08 27 14 36 11.1 11.1 100 2028-1613 >90 WED FEB 02 18 25 19 04 19 30 18 25 05 41 06 08 06 46 03 34 08 31 14 40 11.1 11.1 100 2115-1209 >90 THU FEB 03 18 25 19 04 19 30 19 16 05 41 06 07 06 46 03 38 08 35 14 43 11.0 10.9 98 2200-0740 >90 FRI FEB 04 18 26 19 05 19 31 20 04 05 41 06 07 06 46 03 43 08 39 14 47 11.0 10.0 91 2244-0258 >90 SAT FEB 05 18 26 19 05 19 31 20 52 05 41 06 07 06 45 03 47 08 43 14 51 11.0 9.2 83 2326 0149 >90 SUN FEB 06 18 27 19 06 19 32 21 40 05 40 06 06 06 45 03 52 08 47 14 54 11.0 8.4 76 0009 0630 >90 MON FEB 07 18 27 19 06 19 32 22 29 05 40 06 06 06 45 03 56 08 51 14 58 11.0 7.6 69 0053 1059 >90 TUE FEB 08 18 28 19 07 19 32 23 19 05 40 06 06 06 44 04 01 08 55 15 02 11.0 6.8 61 0139 1505 >90 WED FEB 09 18 28 19 07 19 33 00 11 05 39 06 05 06 44 04 05 08 59 15 05 11.0 5.9 53 0230 1820 >90 THU FEB 10 18 29 19 07 19 33 01 04 05 39 06 05 06 43 04 09 09 03 15 09 11.0 5.0 45 0318 2125 80 FRI FEB 11 18 29 19 08 19 34 02 00 05 39 06 04 06 43 04 14 09 07 15 12 10.9 4.1 37 0412 2317 68 SAT FEB 12 18 30 19 08 19 34 02 55 05 38 06 04 06 42 04 18 09 10 15 15 10.9 3.1 28 0508 2358 56 SUN FEB 13 18 30 19 09 19 35 03 50 05 38 06 04 06 42 04 23 09 14 15 19 10.9 2.2 20 0607 2316 43 MON FEB 14 18 31 19 09 19 35 14 45 04 43 05 37 06 03 06 41 04 27 09 18 15 22 10.9 1.3 12 0707 2107 31 TUE FEB 15 18 31 19 10 19 35 15 49 05 33 05 37 06 03 06 41 04 31 09 22 15 26 10.9 0.5 4 0807 1733 18 WED FEB 16 18 32 19 10 19 36 16 53 06 20 05 36 06 02 06 40 04 35 09 26 15 29 10.9 0.0 0 0906 1246 09 THU FEB 17 18 32 19 10 19 36 17 57 05 36 06 01 06 40 04 39 09 30 15 32 10.9 0.0 0 1004 0706 15 FRI FEB 18 18 33 19 11 19 36 19 01 05 35 06 01 06 39 04 44 09 34 15 36 10.8 0.0 0 1100 0056 28 SAT FEB 19 18 33 19 11 19 37 20 04 05 35 06 00 06 38 04 48 09 38 15 39 10.8 0.9 8 1156-0516 42 SUN FEB 20 18 33 19 11 19 37 21 06 05 34 06 00 06 38 04 52 09 42 15 43 10.8 1.9 17 1252-1106 56 MON FEB 21 18 34 19 12 19 38 22 09 05 34 05 59 06 37 04 57 09 46 15 46 10.8 2.9 27 1349-1609 70 TUE FEB 22 18 34 19 12 19 38 23 12 05 33 05 59 06 36 05 01 09 50 15 50 10.8 4.0 37 1447-2002 83 WED FEB 23 18 35 19 13 19 38 00 12 05 32 05 58 06 36 05 06 09 54 15 53 10.7 5.0 46 1546-2245 >90 THU FEB 24 18 35 19 13 19 39 01 11 05 32 05 57 06 35 05 10 09 58 15 56 10.7 6.0 55 1644-2402 >90 FRI FEB 25 18 35 19 13 19 39 02 06 05 31 05 57 06 34 05 14 10 02 16 00 10.7 6.9 64 1741-2359 >90 SAT FEB 26 18 36 19 14 19 39 02 57 05 30 05 56 06 34 05 19 10 06 16 03 10.7 7.7 72 1836-2240 >90 SUN FEB 27 18 36 19 14 19 40 03 43 14 35 05 30 05 55 06 33 05 23 10 10 16 06 10.7 8.5 79 1928-2019 >90 MON FEB 28 18 37 19 14 19 40 04 25 15 29 05 29 05 55 06 32 05 27 10 14 16 10 10.7 9.2 85 2018-1705 >90 ONE LINE REFERS TO EVENING DATE NEW MOON Feb 03 02:29 UT AND FOLLOWING MORNING. FIRST QUARTER Feb 11 07:19 UT All dates and times are zone HST FULL MOON Feb 18 08:34 UT in upper table (except sid time). LAST QUARTER Feb 24 23:26 UT