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 FRI MAY 01 18 55 19 35 20 03 01 38 04 35 05 03 05 42 10 22 14 20 18 56 8.5 3.0 34 0922 1330 71 SAT MAY 02 18 56 19 36 20 03 02 17 04 34 05 02 05 42 10 26 14 24 18 59 8.5 2.3 26 1013 0750 62 SUN MAY 03 18 56 19 36 20 04 14 03 02 54 04 34 05 01 05 41 10 31 14 28 19 03 8.5 1.7 19 1103 0149 53 MON MAY 04 18 56 19 36 20 04 14 58 03 30 04 33 05 01 05 41 10 35 14 32 19 05 8.5 1.1 12 1151-0414 46 TUE MAY 05 18 57 19 37 20 05 15 52 04 07 04 32 05 00 05 40 10 40 14 36 19 08 8.4 0.4 4 1240-1002 41 WED MAY 06 18 57 19 37 20 05 16 47 04 46 04 31 04 59 05 40 10 44 14 40 19 11 8.4 0.0 0 1329-1520 39 THU MAY 07 18 58 19 38 20 06 17 41 05 27 04 31 04 59 05 39 10 49 14 44 19 15 8.4 0.0 0 1420-1953 40 FRI MAY 08 18 58 19 38 20 06 18 37 06 11 04 30 04 58 05 39 10 53 14 47 19 18 8.4 0.0 0 1513-2328 44 SAT MAY 09 18 58 19 39 20 07 19 32 06 59 04 29 04 58 05 38 10 58 14 51 19 21 8.4 0.0 0 1607-2553 49 SUN MAY 10 18 59 19 39 20 08 20 26 04 29 04 57 05 38 11 03 14 55 19 25 8.3 0.3 3 1701-2702 56 MON MAY 11 18 59 19 40 20 08 21 18 04 28 04 57 05 37 11 07 14 59 19 28 8.3 1.2 13 1756-2653 63 TUE MAY 12 19 00 19 40 20 09 22 06 04 28 04 56 05 37 11 12 15 03 19 32 8.3 2.0 23 1849-2530 71 WED MAY 13 19 00 19 41 20 09 22 50 04 27 04 55 05 36 11 16 15 07 19 35 8.3 2.7 32 1939-2256 79 THU MAY 14 19 00 19 41 20 10 23 31 04 26 04 55 05 36 11 21 15 11 19 38 8.3 3.4 40 2028-1926 87 FRI MAY 15 19 01 19 42 20 10 00 09 04 26 04 54 05 35 11 24 15 15 19 42 8.3 4.0 48 2115-1518 >90 SAT MAY 16 19 01 19 42 20 11 00 44 04 25 04 54 05 35 11 29 15 19 19 45 8.2 4.6 55 2201-1029 >90 SUN MAY 17 19 02 19 43 20 12 01 18 04 25 04 54 05 35 11 34 15 23 19 49 8.2 5.1 62 2245-0512 >90 MON MAY 18 19 02 19 43 20 12 01 52 04 24 04 53 05 34 11 38 15 27 19 52 8.2 5.7 69 2330 0022 >90 TUE MAY 19 19 03 19 44 20 13 02 27 14 41 04 24 04 53 05 34 11 43 15 31 19 56 8.2 6.2 76 0016 0604 >90 WED MAY 20 19 03 19 44 20 13 03 06 15 36 04 23 04 52 05 34 11 47 15 35 19 59 8.2 6.9 84 0105 1138 >90 THU MAY 21 19 03 19 45 20 14 03 48 16 35 04 23 04 52 05 33 11 52 15 39 20 02 8.1 7.6 92 0158 1646 >90 FRI MAY 22 19 04 19 45 20 14 04 37 17 38 04 23 04 52 05 33 11 56 15 43 20 06 8.1 8.1 100 0255 2107 >90 SAT MAY 23 19 04 19 46 20 15 05 33 18 44 04 22 04 51 05 33 12 01 15 47 20 09 8.1 8.1 100 0356 2413 >90 SUN MAY 24 19 05 19 46 20 15 06 36 19 52 04 22 04 51 05 33 12 05 15 51 20 13 8.1 8.1 100 0501 2543 >90 MON MAY 25 19 05 19 47 20 16 20 57 04 21 04 51 05 32 12 10 15 55 20 16 8.1 7.4 91 0606 2521 >90 TUE MAY 26 19 06 19 47 20 17 21 56 04 21 04 50 05 32 12 15 15 58 20 20 8.1 6.4 79 0710 2310 >90 WED MAY 27 19 06 19 48 20 17 22 49 04 21 04 50 05 32 12 19 16 02 20 24 8.1 5.5 68 0811 1926 >90 THU MAY 28 19 06 19 48 20 18 23 36 04 20 04 50 05 32 12 24 16 06 20 27 8.0 4.7 58 0908 1433 >90 FRI MAY 29 19 07 19 49 20 18 00 17 04 20 04 50 05 32 12 28 16 10 20 31 8.0 4.1 50 1002 0847 89 SAT MAY 30 19 07 19 49 20 19 00 55 04 20 04 49 05 31 12 33 16 14 20 35 8.0 3.4 42 1051 0256 80 SUN MAY 31 19 08 19 50 20 19 01 32 04 20 04 49 05 31 12 37 16 18 20 39 8.0 2.8 34 1139-0304 72 ONE LINE REFERS TO EVENING DATE FIRST QUARTER May 01 20:44 UT AND FOLLOWING MORNING. FULL MOON May 09 04:01 UT All dates and times are zone HST LAST QUARTER May 17 07:26 UT in upper table (except sid time). NEW MOON May 24 12:10 UT FIRST QUARTER May 31 03:22 UT