KECK OBSERVATORY CALENDAR FOR 2003 -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 2003 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 12 12 h h % midnight MON SEP 01 18 48 19 26 19 52 22 47 04 52 05 18 05 56 17 48 22 23 03 42 9.9 6.5 66 1535-1931 TUE SEP 02 18 47 19 25 19 52 23 36 04 52 05 18 05 57 17 51 22 27 03 46 9.9 5.7 57 1633-2326 WED SEP 03 18 46 19 24 19 51 00 31 04 52 05 19 05 57 17 54 22 31 03 50 9.9 4.8 48 1734-2555 THU SEP 04 18 45 19 23 19 50 01 29 04 53 05 19 05 57 17 57 22 35 03 54 9.9 3.8 38 1836-2645 FRI SEP 05 18 44 19 22 19 49 02 31 04 53 05 19 05 57 18 00 22 38 03 58 9.9 2.8 28 1937-2554 SAT SEP 06 18 43 19 21 19 48 03 32 04 53 05 19 05 57 18 03 22 42 04 02 10.0 1.8 17 2036-2333 SUN SEP 07 18 42 19 21 19 47 16 49 04 32 04 54 05 20 05 58 18 07 22 46 04 07 10.0 0.8 8 2131-1955 MON SEP 08 18 42 19 20 19 46 17 33 05 29 04 54 05 20 05 58 18 10 22 50 04 11 10.0 0.0 0 2223-1521 TUE SEP 09 18 41 19 19 19 45 18 12 06 22 04 54 05 20 05 58 18 12 22 54 04 15 10.0 0.0 0 2312-1010 WED SEP 10 18 40 19 18 19 44 18 48 07 14 04 54 05 20 05 58 18 15 22 58 04 19 10.0 0.0 0 2358-0439 THU SEP 11 18 39 19 17 19 43 19 21 04 55 05 21 05 59 18 18 23 02 04 24 10.1 0.1 0 0043+0056 FRI SEP 12 18 38 19 16 19 42 19 54 04 55 05 21 05 59 18 21 23 06 04 28 10.1 0.6 6 0127+0625 SAT SEP 13 18 37 19 15 19 41 20 27 04 55 05 21 05 59 18 24 23 10 04 32 10.1 1.2 11 0211+1135 SUN SEP 14 18 36 19 14 19 40 21 01 04 56 05 21 05 59 18 27 23 14 04 36 10.1 1.8 17 0256+1616 MON SEP 15 18 35 19 13 19 39 21 38 04 56 05 22 05 59 18 30 23 18 04 41 10.1 2.4 23 0343+2018 TUE SEP 16 18 34 19 12 19 38 22 18 04 56 05 22 06 00 18 33 23 22 04 45 10.2 3.1 30 0432+2330 WED SEP 17 18 33 19 11 19 37 23 02 04 56 05 22 06 00 18 36 23 26 04 49 10.2 3.9 37 0524+2543 THU SEP 18 18 32 19 10 19 36 23 51 04 57 05 22 06 00 18 39 23 30 04 53 10.2 4.7 45 0617+2647 FRI SEP 19 18 32 19 09 19 35 00 44 04 57 05 23 06 00 18 42 23 34 04 58 10.2 5.6 54 0712+2633 SAT SEP 20 18 31 19 08 19 34 01 41 04 57 05 23 06 00 18 45 23 38 05 01 10.2 6.6 63 0808+2458 SUN SEP 21 18 30 19 07 19 33 02 40 04 57 05 23 06 01 18 48 23 42 05 05 10.3 7.5 73 0903+2202 MON SEP 22 18 29 19 06 19 32 03 40 16 33 04 58 05 23 06 01 18 51 23 45 05 09 10.3 8.6 83 0957+1752 TUE SEP 23 18 28 19 05 19 31 04 40 17 15 04 58 05 23 06 01 18 54 23 49 05 13 10.3 9.6 93 1050+1237 WED SEP 24 18 27 19 05 19 30 05 40 17 56 04 58 05 24 06 01 18 58 23 53 05 18 10.3 10.3 100 1142+0635 THU SEP 25 18 26 19 04 19 29 06 40 18 35 04 58 05 24 06 01 19 01 23 57 05 22 10.3 10.3 100 1234+0005 FRI SEP 26 18 25 19 03 19 28 07 41 19 15 04 59 05 24 06 02 19 03 00 01 05 26 10.4 10.2 98 1327-0630 SAT SEP 27 18 24 19 02 19 27 19 57 04 59 05 24 06 02 19 06 00 05 05 30 10.4 9.4 91 1422-1248 SUN SEP 28 18 23 19 01 19 26 20 42 04 59 05 25 06 02 19 09 00 09 05 35 10.4 8.7 83 1518-1821 MON SEP 29 18 22 19 00 19 26 21 31 04 59 05 25 06 02 19 12 00 13 05 39 10.4 7.9 75 1618-2246 TUE SEP 30 18 22 18 59 19 25 22 25 04 59 05 25 06 03 19 15 00 17 05 43 10.4 7.0 67 1719-2541 ONE LINE REFERS TO EVENING DATE FIRST QUARTER SEP 03 12:37 UT AND FOLLOWING MORNING. FULL MOON SEP 10 16:37 UT All dates and times are zone HST LAST QUARTER SEP 18 19:06 UT in upper table (except sid time). NEW MOON SEP 26 03:11 UT