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 WED JUN 01 19 08 19 50 20 20 06 14 19 23 04 19 04 49 05 31 12 40 16 20 20 40 8.0 8.0 100 0506 2245 >90 THU JUN 02 19 08 19 51 20 20 20 16 04 19 04 49 05 31 12 44 16 24 20 44 8.0 8.0 100 0602 2209 >90 FRI JUN 03 19 09 19 51 20 21 21 07 04 19 04 49 05 31 12 48 16 28 20 48 8.0 7.2 90 0657 2020 >90 SAT JUN 04 19 09 19 51 20 21 21 55 04 19 04 49 05 31 12 52 16 32 20 52 8.0 6.4 80 0752 1722 >90 SUN JUN 05 19 10 19 52 20 22 22 40 04 19 04 49 05 31 12 57 16 36 20 56 7.9 5.7 71 0845 1325 >90 MON JUN 06 19 10 19 52 20 22 23 22 04 19 04 49 05 31 13 01 16 40 21 00 7.9 4.9 62 0937 0840 >90 TUE JUN 07 19 10 19 53 20 23 00 03 04 19 04 49 05 31 13 06 16 44 21 04 7.9 4.3 53 1034 0252 >90 WED JUN 08 19 11 19 53 20 23 00 44 04 19 04 49 05 31 13 10 16 48 21 07 7.9 3.6 45 1121-0210 83 THU JUN 09 19 11 19 53 20 23 01 26 04 19 04 49 05 31 13 14 16 52 21 11 7.9 2.9 36 1214-0748 74 FRI JUN 10 19 11 19 54 20 24 14 00 02 10 04 19 04 49 05 31 13 19 16 56 21 15 7.9 2.1 27 1308-1303 65 SAT JUN 11 19 12 19 54 20 24 15 01 02 58 04 19 04 49 05 31 13 23 17 00 21 19 7.9 1.3 17 1406-1736 57 SUN JUN 12 19 12 19 55 20 25 16 04 03 51 04 19 04 49 05 31 13 28 17 04 21 23 7.9 0.5 5 1505-2109 50 MON JUN 13 19 12 19 55 20 25 17 08 04 47 04 19 04 49 05 31 13 32 17 08 21 27 7.9 0.0 0 1607-2321 46 TUE JUN 14 19 13 19 55 20 25 18 09 05 46 04 19 04 49 05 31 13 36 17 11 21 31 7.9 0.0 0 1709-2404 44 WED JUN 15 19 13 19 56 20 26 19 08 06 46 04 19 04 49 05 32 13 41 17 15 21 35 7.9 0.0 0 1811-2315 45 THU JUN 16 19 13 19 56 20 26 20 01 04 19 04 49 05 32 13 45 17 19 21 39 7.9 0.0 0 1909-2106 49 FRI JUN 17 19 13 19 56 20 26 20 48 04 19 04 49 05 32 13 49 17 23 21 43 7.9 0.4 4 2004-1752 55 SAT JUN 18 19 14 19 56 20 27 21 31 04 19 04 49 05 32 13 54 17 27 21 47 7.9 1.1 13 2056-1353 61 SUN JUN 19 19 14 19 57 20 27 22 10 04 19 04 50 05 32 13 58 17 31 21 51 7.9 1.7 21 2144-0925 69 MON JUN 20 19 14 19 57 20 27 22 46 04 20 04 50 05 32 14 02 17 35 21 56 7.9 2.3 29 2230-0440 76 TUE JUN 21 19 14 19 57 20 27 23 20 04 20 04 50 05 33 14 05 17 39 22 00 7.9 2.9 36 2314 0003 84 WED JUN 22 19 15 19 57 20 28 23 54 04 20 04 50 05 33 14 10 17 43 22 04 7.9 3.4 43 2353 0420 >90 THU JUN 23 19 15 19 58 20 28 00 28 04 20 04 50 05 33 14 14 17 47 22 08 7.9 4.0 50 0042 0914 >90 FRI JUN 24 19 15 19 58 20 28 01 04 04 21 04 51 05 33 14 18 17 51 22 13 7.9 4.6 58 0128 1319 >90 SAT JUN 25 19 15 19 58 20 28 01 43 14 33 04 21 04 51 05 34 14 22 17 55 22 17 7.9 5.2 66 0215 1653 >90 SUN JUN 26 19 15 19 58 20 28 02 26 15 25 04 21 04 51 05 34 14 26 17 59 22 20 7.9 6.0 75 0304 1945 >90 MON JUN 27 19 16 19 58 20 28 03 13 16 19 04 21 04 52 05 34 14 30 18 03 22 24 7.9 6.7 85 0356 2146 >90 TUE JUN 28 19 16 19 58 20 28 04 04 17 13 04 22 04 52 05 34 14 34 18 07 22 29 7.9 7.6 96 0450 2242 >90 WED JUN 29 19 16 19 58 20 29 05 00 18 08 04 22 04 52 05 35 14 39 18 11 22 33 7.9 7.9 100 0546 2228 >90 THU JUN 30 19 16 19 58 20 29 05 58 19 00 04 22 04 53 05 35 14 43 18 15 22 37 7.9 7.9 100 0642 2058 >90 ONE LINE REFERS TO EVENING DATE NEW MOON Jun 01 21:03 UT AND FOLLOWING MORNING. FIRST QUARTER Jun 09 02:09 UT All dates and times are zone HST FULL MOON Jun 15 20:14 UT in upper table (except sid time). LAST QUARTER Jun 23 11:48 UT