KECK OBSERVATORY CALENDAR FOR 2009 -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 2009 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 SAT AUG 01 19 10 19 50 20 19 15 55 03 18 04 38 05 06 05 47 16 41 20 23 01 01 8.3 1.3 16 1802-2640 58 SUN AUG 02 19 09 19 50 20 18 16 43 04 11 04 39 05 07 05 47 16 44 20 27 01 06 8.4 0.5 5 1854-2505 50 MON AUG 03 19 09 19 49 20 17 17 27 05 03 04 39 05 07 05 48 16 47 20 30 01 10 8.4 0.0 0 1945-2223 44 TUE AUG 04 19 08 19 48 20 17 18 07 05 55 04 40 05 08 05 48 16 51 20 34 01 15 8.4 0.0 0 2034-1845 39 WED AUG 05 19 07 19 48 20 16 18 44 06 45 04 40 05 08 05 48 16 54 20 38 01 19 8.4 0.0 0 2121-1421 36 THU AUG 06 19 07 19 47 20 15 19 19 04 41 05 09 05 49 16 57 20 42 01 24 8.4 0.0 0 2207-0923 36 FRI AUG 07 19 06 19 46 20 14 19 53 04 41 05 09 05 49 17 00 20 46 01 28 8.4 0.0 0 2251-0403 39 SAT AUG 08 19 06 19 46 20 14 20 26 04 42 05 09 05 50 17 04 20 50 01 33 8.5 0.2 2 2336 0129 44 SUN AUG 09 19 05 19 45 20 13 20 59 04 42 05 10 05 50 17 07 20 54 01 37 8.5 0.8 9 0021 0700 52 MON AUG 10 19 05 19 44 20 12 21 35 04 43 05 10 05 50 17 09 20 58 01 42 8.5 1.4 16 0108 1218 60 TUE AUG 11 19 04 19 44 20 11 22 14 04 43 05 11 05 51 17 12 21 02 01 46 8.5 2.1 24 0158 1708 70 WED AUG 12 19 03 19 43 20 11 22 57 04 44 05 11 05 51 17 16 21 06 01 51 8.6 2.8 32 0252 2112 80 THU AUG 13 19 03 19 42 20 10 23 47 04 44 05 12 05 51 17 19 21 10 01 55 8.6 3.6 42 0347 2357 >90 FRI AUG 14 19 02 19 41 20 09 00 43 04 44 05 12 05 51 17 22 21 14 01 59 8.6 4.6 53 0451 2547 >90 SAT AUG 15 19 01 19 41 20 08 01 46 15 02 04 45 05 12 05 52 17 25 21 18 02 04 8.6 5.6 65 0554 2541 >90 SUN AUG 16 19 01 19 40 20 07 02 54 16 03 04 45 05 13 05 52 17 28 21 22 02 08 8.6 6.8 78 0658 2349 >90 MON AUG 17 19 00 19 39 20 06 04 02 16 59 04 46 05 13 05 52 17 31 21 26 02 12 8.7 7.9 91 0800 2018 >90 TUE AUG 18 18 59 19 38 20 06 05 09 17 50 04 46 05 13 05 53 17 35 21 30 02 16 8.7 8.7 100 0859 1526 >90 WED AUG 19 18 58 19 38 20 05 06 13 18 36 04 47 05 14 05 53 17 38 21 34 02 21 8.7 8.7 100 0955 0937 >90 THU AUG 20 18 58 19 37 20 04 19 18 04 47 05 14 05 53 17 41 21 38 02 25 8.7 8.7 100 1048 0319 >90 FRI AUG 21 18 57 19 36 20 03 19 59 04 48 05 15 05 54 17 44 21 41 02 30 8.8 8.8 100 1140-0303 >90 SAT AUG 22 18 56 19 35 20 02 20 38 04 48 05 15 05 54 17 47 21 45 02 34 8.8 8.2 93 1230-0908 >90 SUN AUG 23 18 55 19 34 20 01 21 18 04 48 05 15 05 54 17 50 21 49 02 38 8.8 7.5 85 1321-1437 >90 MON AUG 24 18 54 19 33 20 00 22 00 04 49 05 16 05 54 17 53 21 53 02 43 8.8 6.8 77 1412-1916 >90 TUE AUG 25 18 54 19 32 19 59 22 44 04 49 05 16 05 55 17 56 21 57 02 47 8.8 6.1 68 1505-2254 >90 WED AUG 26 18 53 19 32 19 58 23 32 04 49 05 16 05 55 17 59 22 01 02 51 8.8 5.3 59 1558-2523 >90 THU AUG 27 18 52 19 31 19 57 00 21 04 50 05 16 05 55 18 01 22 05 02 56 8.9 4.5 50 1654-2629 89 FRI AUG 28 18 51 19 30 19 56 01 13 04 50 05 17 05 55 18 04 22 09 03 00 8.9 3.6 40 1746-2636 79 SAT AUG 29 18 50 19 29 19 55 14 39 02 05 04 51 05 17 05 56 18 07 22 13 03 05 8.9 2.8 30 1839-2526 69 SUN AUG 30 18 50 19 28 19 54 15 24 02 58 04 51 05 17 05 56 18 10 22 17 03 09 9.0 1.9 21 1930-2305 59 MON AUG 31 18 49 19 27 19 53 16 06 03 49 04 51 05 18 05 56 18 13 22 21 03 13 9.0 1.0 11 2019-1945 50 ONE LINE REFERS TO EVENING DATE FULL MOON Aug 06 00:56 UT AND FOLLOWING MORNING. LAST QUARTER Aug 13 18:55 UT All dates and times are zone HST NEW MOON Aug 20 10:01 UT in upper table (except sid time). FIRST QUARTER Aug 27 11:42 UT