KECK OBSERVATORY CALENDAR FOR 2000 -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 2000 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 18 18 h h % midnight FRI SEP 01 18 47 19 25 19 52 21 37 04 52 05 18 05 57 18 17 22 26 03 18 9.0 7.2 80 1411-0751 SAT SEP 02 18 46 19 24 19 51 22 17 04 52 05 19 05 57 18 20 22 30 03 22 9.0 6.6 73 1500-1210 SUN SEP 03 18 45 19 23 19 50 22 59 04 53 05 19 05 57 18 23 22 33 03 27 9.0 5.9 65 1550-1549 MON SEP 04 18 44 19 22 19 49 23 41 04 53 05 19 05 57 18 26 22 37 03 31 9.1 5.2 57 1640-1841 TUE SEP 05 18 43 19 21 19 48 00 26 04 53 05 19 05 57 18 29 22 41 03 35 9.1 4.4 48 1730-2040 WED SEP 06 18 42 19 21 19 47 01 12 04 54 05 20 05 58 18 32 22 45 03 40 9.1 3.7 40 1821-2143 THU SEP 07 18 42 19 20 19 46 02 01 04 54 05 20 05 58 18 35 22 49 03 44 9.1 2.9 31 1912-2147 FRI SEP 08 18 41 19 19 19 45 02 51 04 54 05 20 05 58 18 37 22 53 03 48 9.2 2.1 22 2003-2053 SAT SEP 09 18 40 19 18 19 44 03 42 04 54 05 20 05 58 18 40 22 57 03 52 9.2 1.2 13 2053-1903 SUN SEP 10 18 39 19 17 19 43 16 41 04 33 04 55 05 21 05 59 18 43 23 01 03 57 9.2 0.4 3 2143-1621 MON SEP 11 18 38 19 16 19 42 17 22 05 25 04 55 05 21 05 59 18 46 23 05 04 01 9.2 0.0 0 2231-1253 TUE SEP 12 18 37 19 15 19 41 18 02 06 17 04 55 05 21 05 59 18 49 23 09 04 05 9.2 0.0 0 2319-0849 WED SEP 13 18 36 19 14 19 40 18 40 07 09 04 56 05 21 05 59 18 52 23 13 04 10 9.3 0.0 0 0007-0417 THU SEP 14 18 35 19 13 19 39 19 18 04 56 05 22 05 59 18 55 23 17 04 14 9.3 0.0 0 0055+0030 FRI SEP 15 18 34 19 12 19 38 19 57 04 56 05 22 06 00 18 58 23 21 04 18 9.3 0.3 3 0144+0521 SAT SEP 16 18 33 19 11 19 37 20 37 04 56 05 22 06 00 19 01 23 25 04 22 9.3 1.0 10 0234+1002 SUN SEP 17 18 32 19 10 19 36 21 19 04 57 05 22 06 00 19 04 23 29 04 26 9.3 1.7 18 0326+1417 MON SEP 18 18 32 19 09 19 35 22 05 04 57 05 23 06 00 19 07 23 33 04 30 9.4 2.5 26 0421+1750 TUE SEP 19 18 31 19 08 19 34 22 56 04 57 05 23 06 00 19 10 23 37 04 34 9.4 3.4 35 0519+2025 WED SEP 20 18 30 19 07 19 33 23 51 04 57 05 23 06 01 19 13 23 40 04 38 9.4 4.3 45 0619+2148 THU SEP 21 18 29 19 06 19 32 00 50 04 58 05 23 06 01 19 16 23 44 04 43 9.4 5.3 56 0720+2149 FRI SEP 22 18 28 19 05 19 31 01 53 04 58 05 23 06 01 19 19 23 48 04 47 9.5 6.4 67 0821+2024 SAT SEP 23 18 27 19 05 19 30 02 56 04 58 05 24 06 01 19 22 23 52 04 51 9.5 7.4 78 0921+1741 SUN SEP 24 18 26 19 04 19 29 03 59 16 35 04 58 05 24 06 01 19 24 23 56 04 55 9.5 8.5 89 1019+1351 MON SEP 25 18 25 19 03 19 28 05 00 17 23 04 59 05 24 06 02 19 27 00 00 05 00 9.5 9.5 100 1115+0913 TUE SEP 26 18 24 19 02 19 27 05 59 18 07 04 59 05 24 06 02 19 30 00 04 05 04 9.5 9.5 100 1208+0408 WED SEP 27 18 23 19 01 19 26 06 56 18 49 04 59 05 25 06 02 19 33 00 08 05 08 9.6 9.6 100 1300-0103 THU SEP 28 18 22 19 00 19 26 07 52 19 29 04 59 05 25 06 02 19 37 00 12 05 12 9.6 9.5 99 1351-0606 FRI SEP 29 18 22 18 59 19 25 20 10 04 59 05 25 06 03 19 40 00 16 05 16 9.6 8.8 92 1441-1044 SAT SEP 30 18 21 18 58 19 24 20 52 05 00 05 25 06 03 19 43 00 20 05 21 9.6 8.1 84 1531-1445 ONE LINE REFERS TO EVENING DATE FIRST QUARTER SEP 05 16:31 UT AND FOLLOWING MORNING. FULL MOON SEP 13 19:40 UT All dates and times are zone HST LAST QUARTER SEP 21 01:32 UT in upper table (except sid time). NEW MOON SEP 27 19:56 UT