KECK OBSERVATORY CALENDAR FOR 2008 -NAUTICAL (computed for altitude 4145.0 m) NAUTICAL(12 deg) TWILIGHT/DAWN MOON DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (12 deg) RA DEC 2008 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 12 12 h h % midnight MON SEP 01 18 47 19 25 19 52 20 04 04 52 05 18 05 57 17 50 22 26 03 45 9.9 9.2 93 1241-0907 TUE SEP 02 18 46 19 24 19 51 20 39 04 52 05 19 05 57 17 53 22 30 03 50 9.9 8.7 87 1328-1428 WED SEP 03 18 45 19 23 19 50 21 17 04 53 05 19 05 57 17 56 22 34 03 54 9.9 8.0 80 1416-1906 THU SEP 04 18 44 19 22 19 49 21 57 04 53 05 19 05 57 17 59 22 38 03 58 9.9 7.4 74 1505-2252 FRI SEP 05 18 43 19 21 19 48 22 40 04 53 05 19 05 57 18 02 22 42 04 01 10.0 6.7 66 1556-2535 SAT SEP 06 18 42 19 21 19 47 23 27 04 54 05 20 05 58 18 06 22 46 04 06 10.0 5.9 58 1649-2709 SUN SEP 07 18 42 19 20 19 46 00 18 04 54 05 20 05 58 18 09 22 49 04 10 10.0 5.0 50 1742-2729 MON SEP 08 18 41 19 19 19 45 01 10 04 54 05 20 05 58 18 12 22 53 04 14 10.0 4.2 41 1836-2633 TUE SEP 09 18 40 19 18 19 44 02 05 04 54 05 20 05 58 18 15 22 57 04 18 10.0 3.3 32 1928-2422 WED SEP 10 18 39 19 17 19 43 03 00 04 55 05 21 05 59 18 18 23 01 04 23 10.1 2.3 23 2020-2101 THU SEP 11 18 38 19 16 19 42 16 04 03 54 04 55 05 21 05 59 18 20 23 05 04 27 10.1 1.4 14 2109-1639 FRI SEP 12 18 37 19 15 19 41 16 43 04 49 04 55 05 21 05 59 18 23 23 09 04 31 10.1 0.5 5 2158-1126 SAT SEP 13 18 36 19 14 19 40 17 20 05 43 04 56 05 21 05 59 18 26 23 13 04 35 10.1 0.0 0 2246-0536 SUN SEP 14 18 35 19 13 19 39 17 56 06 39 04 56 05 22 05 59 18 29 23 17 04 40 10.1 0.0 0 2334+0037 MON SEP 15 18 34 19 12 19 38 18 32 07 36 04 56 05 22 06 00 18 32 23 21 04 44 10.2 0.0 0 0024+0655 TUE SEP 16 18 33 19 11 19 37 19 11 04 56 05 22 06 00 18 35 23 25 04 48 10.2 0.0 0 0115+1300 WED SEP 17 18 32 19 10 19 36 19 53 04 57 05 22 06 00 18 38 23 29 04 52 10.2 0.7 7 0209+1827 THU SEP 18 18 32 19 09 19 35 20 39 04 57 05 23 06 00 18 41 23 33 04 57 10.2 1.5 14 0307+2255 FRI SEP 19 18 31 19 08 19 34 21 31 04 57 05 23 06 00 18 44 23 37 05 01 10.2 2.4 23 0409+2600 SAT SEP 20 18 30 19 07 19 33 22 30 04 57 05 23 06 01 18 47 23 41 05 05 10.3 3.4 32 0512+2724 SUN SEP 21 18 29 19 06 19 32 23 32 04 58 05 23 06 01 18 50 23 45 05 09 10.3 4.4 43 0616+2659 MON SEP 22 18 28 19 05 19 31 00 37 04 58 05 23 06 01 18 53 23 49 05 12 10.3 5.5 53 0718+2450 TUE SEP 23 18 27 19 05 19 30 01 41 04 58 05 24 06 01 18 57 23 53 05 17 10.3 6.6 63 0816+2113 WED SEP 24 18 26 19 04 19 29 02 43 04 58 05 24 06 01 19 00 23 56 05 21 10.3 7.6 74 0911+1627 THU SEP 25 18 25 19 03 19 28 03 41 16 13 04 59 05 24 06 02 19 03 00 00 05 25 10.4 8.6 83 1002+1055 FRI SEP 26 18 24 19 02 19 27 04 37 16 51 04 59 05 24 06 02 19 06 00 04 05 29 10.4 9.6 92 1051+0457 SAT SEP 27 18 23 19 01 19 26 05 30 17 26 04 59 05 25 06 02 19 08 00 08 05 34 10.4 10.4 100 1138-0107 SUN SEP 28 18 22 19 00 19 26 06 23 18 01 04 59 05 25 06 02 19 11 00 12 05 38 10.4 10.4 100 1225-0703 MON SEP 29 18 22 18 59 19 25 07 16 18 36 04 59 05 25 06 03 19 14 00 16 05 42 10.4 10.4 100 1312-1235 TUE SEP 30 18 21 18 58 19 24 19 13 05 00 05 25 06 03 19 17 00 20 05 46 10.4 10.2 97 1359-1729 ONE LINE REFERS TO EVENING DATE FIRST QUARTER SEP 07 14:08 UT AND FOLLOWING MORNING. FULL MOON SEP 15 09:15 UT All dates and times are zone HST LAST QUARTER SEP 22 05:08 UT in upper table (except sid time). NEW MOON SEP 29 08:14 UT