KECK OBSERVATORY CALENDAR FOR 2007 -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 2007 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 12 12 h h % midnight SAT SEP 01 18 48 19 26 19 52 21 43 04 52 05 18 05 56 17 48 22 23 03 42 9.9 2.3 23 0257+2205 SUN SEP 02 18 47 19 25 19 52 22 33 04 52 05 18 05 57 17 51 22 27 03 46 9.9 3.1 31 0357+2550 MON SEP 03 18 46 19 24 19 51 23 29 04 52 05 19 05 57 17 54 22 31 03 51 9.9 4.1 41 0459+2757 TUE SEP 04 18 45 19 23 19 50 00 28 04 53 05 19 05 57 17 57 22 35 03 55 9.9 5.1 51 0602+2817 WED SEP 05 18 44 19 22 19 49 01 30 04 53 05 19 05 57 18 00 22 39 03 58 9.9 6.1 61 0702+2654 THU SEP 06 18 43 19 21 19 48 02 32 04 53 05 19 05 57 18 03 22 43 04 02 10.0 7.2 72 0800+2401 FRI SEP 07 18 42 19 21 19 47 03 31 16 32 04 54 05 20 05 58 18 07 22 46 04 07 10.0 8.2 81 0853+1958 SAT SEP 08 18 42 19 20 19 46 04 26 17 12 04 54 05 20 05 58 18 10 22 50 04 11 10.0 9.1 90 0943+1502 SUN SEP 09 18 41 19 19 19 45 05 19 17 48 04 54 05 20 05 58 18 13 22 54 04 15 10.0 10.0 99 1030+0934 MON SEP 10 18 40 19 18 19 44 06 09 18 21 04 54 05 20 05 58 18 16 22 58 04 19 10.0 10.0 100 1114+0348 TUE SEP 11 18 39 19 17 19 43 06 59 18 53 04 55 05 21 05 59 18 18 23 02 04 24 10.1 10.1 100 1157-0159 WED SEP 12 18 38 19 16 19 42 07 47 19 25 04 55 05 21 05 59 18 21 23 06 04 28 10.1 9.9 98 1240-0739 THU SEP 13 18 37 19 15 19 41 19 57 04 55 05 21 05 59 18 24 23 10 04 32 10.1 9.4 93 1323-1259 FRI SEP 14 18 36 19 14 19 40 20 31 04 56 05 21 05 59 18 27 23 14 04 36 10.1 8.8 87 1408-1748 SAT SEP 15 18 35 19 13 19 39 21 07 04 56 05 22 05 59 18 30 23 18 04 41 10.1 8.2 81 1455-2156 SUN SEP 16 18 34 19 12 19 38 21 48 04 56 05 22 06 00 18 33 23 22 04 45 10.2 7.6 74 1545-2511 MON SEP 17 18 33 19 11 19 37 22 33 04 56 05 22 06 00 18 36 23 26 04 49 10.2 6.8 66 1637-2722 TUE SEP 18 18 32 19 10 19 36 23 23 04 57 05 22 06 00 18 39 23 30 04 53 10.2 6.0 58 1732-2818 WED SEP 19 18 32 19 09 19 35 00 18 04 57 05 23 06 00 18 42 23 34 04 58 10.2 5.1 49 1828-2752 THU SEP 20 18 31 19 08 19 34 01 15 04 57 05 23 06 00 18 45 23 38 05 02 10.2 4.1 40 1924-2558 FRI SEP 21 18 30 19 07 19 33 02 15 04 57 05 23 06 01 18 48 23 42 05 06 10.3 3.1 30 2020-2239 SAT SEP 22 18 29 19 06 19 32 03 15 04 58 05 23 06 01 18 51 23 46 05 09 10.3 2.1 20 2114-1801 SUN SEP 23 18 28 19 05 19 31 16 10 04 15 04 58 05 23 06 01 18 54 23 50 05 13 10.3 1.1 11 2207-1219 MON SEP 24 18 27 19 05 19 30 16 50 05 15 04 58 05 24 06 01 18 58 23 53 05 18 10.3 0.2 1 2259-0548 TUE SEP 25 18 26 19 04 19 29 17 30 06 16 04 58 05 24 06 01 19 01 23 57 05 22 10.3 0.0 0 2351+0109 WED SEP 26 18 25 19 03 19 28 18 09 07 18 04 59 05 24 06 02 19 04 00 01 05 26 10.4 0.0 0 0044+0810 THU SEP 27 18 24 19 02 19 27 18 51 04 59 05 24 06 02 19 07 00 05 05 30 10.4 0.0 0 0140+1445 FRI SEP 28 18 23 19 01 19 26 19 36 04 59 05 25 06 02 19 09 00 09 05 35 10.4 0.6 5 0238+2027 SAT SEP 29 18 22 19 00 19 26 20 26 04 59 05 25 06 02 19 12 00 13 05 39 10.4 1.4 13 0339+2449 SUN SEP 30 18 22 18 59 19 25 21 21 04 59 05 25 06 03 19 15 00 17 05 43 10.4 2.4 22 0443+2729 ONE LINE REFERS TO EVENING DATE LAST QUARTER SEP 04 02:36 UT AND FOLLOWING MORNING. NEW MOON SEP 11 12:45 UT All dates and times are zone HST FIRST QUARTER SEP 19 16:51 UT in upper table (except sid time). FULL MOON SEP 26 19:48 UT