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 TUE SEP 01 18 48 19 26 19 53 16 44 04 40 04 52 05 18 05 56 18 17 22 25 03 18 9.0 0.2 2 2107-1535 40 WED SEP 02 18 47 19 25 19 52 17 20 05 30 04 52 05 18 05 57 18 20 22 29 03 22 9.0 0.0 0 2153-1046 32 THU SEP 03 18 46 19 24 19 51 17 54 06 20 04 52 05 19 05 57 18 23 22 33 03 26 9.0 0.0 0 2238-0530 25 FRI SEP 04 18 45 19 23 19 50 18 28 04 53 05 19 05 57 18 26 22 37 03 30 9.0 0.0 0 2323 0002 23 SAT SEP 05 18 44 19 22 19 49 19 02 04 53 05 19 05 57 18 29 22 41 03 34 9.1 0.0 0 0009 0538 26 SUN SEP 06 18 43 19 21 19 48 19 37 04 53 05 19 05 57 18 32 22 45 03 38 9.1 0.0 0 0056 1104 33 MON SEP 07 18 43 19 21 19 47 20 14 04 54 05 20 05 58 18 35 22 48 03 43 9.1 0.5 4 0146 1604 42 TUE SEP 08 18 42 19 20 19 46 20 56 04 54 05 20 05 58 18 38 22 52 03 47 9.1 1.2 12 0239 2021 53 WED SEP 09 18 41 19 19 19 45 21 44 04 54 05 20 05 58 18 41 22 56 03 51 9.2 2.0 21 0335 2337 64 THU SEP 10 18 40 19 18 19 44 22 37 04 54 05 20 05 58 18 44 23 00 03 55 9.2 2.9 31 0435 2532 76 FRI SEP 11 18 39 19 17 19 43 23 36 04 55 05 21 05 59 18 47 23 04 04 00 9.2 3.9 42 0536 2547 88 SAT SEP 12 18 38 19 16 19 42 00 39 04 55 05 21 05 59 18 49 23 08 04 04 9.2 4.9 53 0639 2436 >90 SUN SEP 13 18 37 19 15 19 41 01 45 14 49 04 55 05 21 05 59 18 52 23 12 04 08 9.2 6.1 65 0740 2140 >90 MON SEP 14 18 36 19 14 19 40 02 51 15 40 04 56 05 21 05 59 18 55 23 16 04 13 9.3 7.2 77 0839 1722 >90 TUE SEP 15 18 35 19 13 19 39 03 54 16 27 04 56 05 22 05 59 18 58 23 20 04 17 9.3 8.3 88 0934 1200 >90 WED SEP 16 18 34 19 12 19 38 04 56 17 10 04 56 05 22 06 00 19 01 23 24 04 21 9.3 9.3 100 1028 0559 >90 THU SEP 17 18 33 19 11 19 37 05 56 17 50 04 56 05 22 06 00 19 04 23 28 04 25 9.3 9.3 100 1120-0019 >90 FRI SEP 18 18 33 19 10 19 36 06 55 18 30 04 57 05 22 06 00 19 07 23 32 04 30 9.3 9.3 100 1211-0631 >90 SAT SEP 19 18 32 19 09 19 35 19 11 04 57 05 23 06 00 19 10 23 36 04 34 9.4 9.4 100 1302-1216 >90 SUN SEP 20 18 31 19 08 19 34 19 53 04 57 05 23 06 00 19 13 23 40 04 38 9.4 9.1 96 1353-1718 >90 MON SEP 21 18 30 19 07 19 33 20 37 04 57 05 23 06 01 19 16 23 44 04 41 9.4 8.3 88 1446-2122 >90 TUE SEP 22 18 29 19 06 19 32 21 23 04 58 05 23 06 01 19 19 23 48 04 46 9.4 7.6 80 1540-2418 >90 WED SEP 23 18 28 19 05 19 31 22 13 04 58 05 23 06 01 19 22 23 52 04 50 9.5 6.7 71 1634-2559 >90 THU SEP 24 18 27 19 05 19 30 23 05 04 58 05 24 06 01 19 25 23 55 04 54 9.5 5.9 62 1728-2623 >90 FRI SEP 25 18 26 19 04 19 29 23 57 04 58 05 24 06 01 19 28 23 59 04 58 9.5 5.0 52 1822-2533 >90 SAT SEP 26 18 25 19 03 19 28 00 50 04 59 05 24 06 02 19 31 00 03 05 03 9.5 4.2 43 1914-2331 83 SUN SEP 27 18 24 19 02 19 27 14 02 01 42 04 59 05 24 06 02 19 34 00 07 05 07 9.5 3.3 34 2003-2037 72 MON SEP 28 18 23 19 01 19 26 14 42 02 33 04 59 05 25 06 02 19 37 00 11 05 11 9.6 2.4 25 2051-1645 61 TUE SEP 29 18 23 19 00 19 26 15 19 03 23 04 59 05 25 06 02 19 40 00 15 05 15 9.6 1.6 16 2137-1211 50 WED SEP 30 18 22 18 59 19 25 15 53 04 13 05 00 05 25 06 03 19 43 00 19 05 20 9.6 0.8 8 2222-0706 39 ONE LINE REFERS TO EVENING DATE FULL MOON Sep 04 16:03 UT AND FOLLOWING MORNING. LAST QUARTER Sep 12 02:16 UT All dates and times are zone HST NEW MOON Sep 18 18:43 UT in upper table (except sid time). FIRST QUARTER Sep 26 04:50 UT