KECK OBSERVATORY CALENDAR FOR 2004 -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 2004 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 18 18 h h % midnight FRI OCT 01 18 20 18 57 19 23 20 18 05 00 05 25 06 03 19 46 00 24 05 25 9.6 0.9 9 0334+2127 SAT OCT 02 18 19 18 56 19 22 21 00 05 00 05 26 06 03 19 49 00 28 05 29 9.6 1.6 16 0425+2449 SUN OCT 03 18 18 18 56 19 21 21 45 05 00 05 26 06 04 19 52 00 32 05 33 9.6 2.4 24 0517+2701 MON OCT 04 18 17 18 55 19 20 22 33 05 01 05 26 06 04 19 55 00 36 05 38 9.7 3.2 33 0611+2758 TUE OCT 05 18 16 18 54 19 19 23 25 05 01 05 26 06 04 19 58 00 40 05 42 9.7 4.1 42 0704+2737 WED OCT 06 18 16 18 53 19 19 00 19 05 01 05 27 06 04 20 02 00 44 05 45 9.7 5.0 51 0757+2601 THU OCT 07 18 15 18 52 19 18 01 14 05 01 05 27 06 05 20 05 00 48 05 49 9.7 5.9 61 0848+2313 FRI OCT 08 18 14 18 51 19 17 02 08 05 02 05 27 06 05 20 08 00 52 05 54 9.8 6.9 70 0938+1920 SAT OCT 09 18 13 18 51 19 16 03 03 05 02 05 27 06 05 20 11 00 56 05 58 9.8 7.8 79 1027+1433 SUN OCT 10 18 12 18 50 19 15 03 56 16 24 05 02 05 28 06 05 20 14 00 59 06 02 9.8 8.7 88 1114+0902 MON OCT 11 18 11 18 49 19 15 04 51 16 59 05 02 05 28 06 06 20 18 01 03 06 06 9.8 9.6 98 1201+0259 TUE OCT 12 18 11 18 48 19 14 05 46 17 34 05 03 05 28 06 06 20 21 01 07 06 11 9.8 9.8 100 1249-0321 WED OCT 13 18 10 18 48 19 13 06 43 18 11 05 03 05 29 06 06 20 23 01 11 06 15 9.8 9.8 100 1338-0941 THU OCT 14 18 09 18 47 19 12 07 44 18 50 05 03 05 29 06 07 20 26 01 15 06 19 9.8 9.8 100 1431-1539 FRI OCT 15 18 08 18 46 19 12 19 34 05 03 05 29 06 07 20 30 01 19 06 23 9.8 9.5 96 1527-2053 SAT OCT 16 18 08 18 45 19 11 20 24 05 04 05 29 06 07 20 33 01 23 06 28 9.9 8.7 87 1626-2455 SUN OCT 17 18 07 18 45 19 10 21 20 05 04 05 30 06 08 20 36 01 27 06 32 9.9 7.7 78 1730-2722 MON OCT 18 18 06 18 44 19 10 22 21 05 04 05 30 06 08 20 40 01 31 06 36 9.9 6.7 67 1834-2801 TUE OCT 19 18 06 18 43 19 09 23 26 05 05 05 30 06 08 20 43 01 35 06 41 9.9 5.7 56 1938-2646 WED OCT 20 18 05 18 43 19 08 00 30 05 05 05 31 06 09 20 46 01 39 06 45 10.0 4.6 46 2039-2351 THU OCT 21 18 04 18 42 19 08 01 33 05 05 05 31 06 09 20 50 01 43 06 49 10.0 3.5 35 2136-1933 FRI OCT 22 18 03 18 42 19 07 02 33 05 06 05 31 06 09 20 53 01 47 06 54 10.0 2.5 25 2229-1416 SAT OCT 23 18 03 18 41 19 07 03 30 05 06 05 32 06 10 20 57 01 51 06 58 10.0 1.6 16 2319-0822 SUN OCT 24 18 02 18 40 19 06 04 25 05 06 05 32 06 10 21 00 01 55 07 01 10.0 0.7 6 0007-0210 MON OCT 25 18 02 18 40 19 06 16 27 05 18 05 06 05 32 06 10 21 04 01 59 07 05 10.0 0.0 0 0054+0400 TUE OCT 26 18 01 18 39 19 05 17 02 06 12 05 07 05 33 06 11 21 07 02 03 07 10 10.0 0.0 0 0140+0956 WED OCT 27 18 00 18 39 19 05 17 37 07 06 05 07 05 33 06 11 21 11 02 06 07 14 10.0 0.0 0 0228+1522 THU OCT 28 18 00 18 38 19 04 18 14 05 07 05 33 06 12 21 14 02 10 07 18 10.0 0.0 0 0317+2004 FRI OCT 29 17 59 18 38 19 04 18 54 05 08 05 34 06 12 21 18 02 14 07 23 10.1 0.0 0 0407+2349 SAT OCT 30 17 59 18 37 19 03 19 38 05 08 05 34 06 13 21 20 02 18 07 27 10.1 0.6 5 0500+2626 SUN OCT 31 17 58 18 37 19 03 20 25 05 09 05 35 06 13 21 24 02 22 07 32 10.1 1.4 13 0553+2749 ONE LINE REFERS TO EVENING DATE LAST QUARTER OCT 06 10:16 UT AND FOLLOWING MORNING. NEW MOON OCT 14 02:49 UT All dates and times are zone HST FIRST QUARTER OCT 20 22:01 UT in upper table (except sid time). FULL MOON OCT 28 03:10 UT