KECK OBSERVATORY CALENDAR FOR 2003 -ASTRONOMICAL (computed for altitude 4145.0 m) ASTRONOMICAL(18 deg) TWILIGHT/DAWN MOON DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (18 deg) RA DEC 2003 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 18 18 h h % midnight MON SEP 01 18 48 19 26 19 52 22 47 04 52 05 18 05 56 18 14 22 23 03 15 9.0 6.1 67 1535-1931 TUE SEP 02 18 47 19 25 19 52 23 36 04 52 05 18 05 57 18 18 22 27 03 19 9.0 5.3 58 1633-2326 WED SEP 03 18 46 19 24 19 51 00 31 04 52 05 19 05 57 18 21 22 31 03 23 9.0 4.4 48 1734-2555 THU SEP 04 18 45 19 23 19 50 01 29 04 53 05 19 05 57 18 24 22 35 03 28 9.0 3.4 37 1836-2645 FRI SEP 05 18 44 19 22 19 49 02 31 04 53 05 19 05 57 18 27 22 38 03 32 9.1 2.4 26 1937-2554 SAT SEP 06 18 43 19 21 19 48 03 32 04 53 05 19 05 57 18 30 22 42 03 36 9.1 1.3 14 2036-2333 SUN SEP 07 18 42 19 21 19 47 16 49 04 32 04 54 05 20 05 58 18 33 22 46 03 41 9.1 0.4 4 2131-1955 MON SEP 08 18 42 19 20 19 46 17 33 05 29 04 54 05 20 05 58 18 36 22 50 03 45 9.1 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 39 22 54 03 49 9.2 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 41 22 58 03 53 9.2 0.0 0 2358-0439 THU SEP 11 18 39 19 17 19 43 19 21 04 55 05 21 05 59 18 44 23 02 03 58 9.2 0.0 0 0043+0056 FRI SEP 12 18 38 19 16 19 42 19 54 04 55 05 21 05 59 18 47 23 06 04 02 9.2 0.2 2 0127+0625 SAT SEP 13 18 37 19 15 19 41 20 27 04 55 05 21 05 59 18 50 23 10 04 06 9.2 0.8 8 0211+1135 SUN SEP 14 18 36 19 14 19 40 21 01 04 56 05 21 05 59 18 53 23 14 04 11 9.3 1.4 14 0256+1616 MON SEP 15 18 35 19 13 19 39 21 38 04 56 05 22 05 59 18 56 23 18 04 15 9.3 2.0 21 0343+2018 TUE SEP 16 18 34 19 12 19 38 22 18 04 56 05 22 06 00 18 59 23 22 04 19 9.3 2.7 28 0432+2330 WED SEP 17 18 33 19 11 19 37 23 02 04 56 05 22 06 00 19 02 23 26 04 23 9.3 3.4 36 0524+2543 THU SEP 18 18 32 19 10 19 36 23 51 04 57 05 22 06 00 19 05 23 30 04 28 9.3 4.2 45 0617+2647 FRI SEP 19 18 32 19 09 19 35 00 44 04 57 05 23 06 00 19 08 23 34 04 31 9.4 5.1 54 0712+2633 SAT SEP 20 18 31 19 08 19 34 01 41 04 57 05 23 06 00 19 11 23 38 04 35 9.4 6.1 65 0808+2458 SUN SEP 21 18 30 19 07 19 33 02 40 04 57 05 23 06 01 19 14 23 42 04 39 9.4 7.1 75 0903+2202 MON SEP 22 18 29 19 06 19 32 03 40 16 33 04 58 05 23 06 01 19 17 23 45 04 44 9.4 8.1 86 0957+1752 TUE SEP 23 18 28 19 05 19 31 04 40 17 15 04 58 05 23 06 01 19 20 23 49 04 48 9.5 9.2 96 1050+1237 WED SEP 24 18 27 19 05 19 30 05 40 17 56 04 58 05 24 06 01 19 23 23 53 04 52 9.5 9.5 100 1142+0635 THU SEP 25 18 26 19 04 19 29 06 40 18 35 04 58 05 24 06 01 19 26 23 57 04 56 9.5 9.5 100 1234+0005 FRI SEP 26 18 25 19 03 19 28 07 41 19 15 04 59 05 24 06 02 19 29 00 01 05 01 9.5 9.5 100 1327-0630 SAT SEP 27 18 24 19 02 19 27 19 57 04 59 05 24 06 02 19 31 00 05 05 05 9.5 9.0 94 1422-1248 SUN SEP 28 18 23 19 01 19 26 20 42 04 59 05 25 06 02 19 34 00 09 05 09 9.6 8.3 86 1518-1821 MON SEP 29 18 22 19 00 19 26 21 31 04 59 05 25 06 02 19 38 00 13 05 13 9.6 7.5 78 1618-2246 TUE SEP 30 18 22 18 59 19 25 22 25 04 59 05 25 06 03 19 41 00 17 05 17 9.6 6.6 68 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