KECK OBSERVATORY CALENDAR FOR 2001 -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 2001 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 18 10 06 10 04 52 05 18 05 56 17 50 22 25 03 43 9.9 0.0 0 2236-1333 SUN SEP 02 18 47 19 25 19 52 18 47 06 59 04 52 05 18 05 57 17 53 22 29 03 47 9.9 0.0 0 2321-0922 MON SEP 03 18 46 19 24 19 51 19 22 07 48 04 52 05 19 05 57 17 56 22 32 03 52 9.9 0.0 0 0006-0448 TUE SEP 04 18 45 19 23 19 50 19 56 04 53 05 19 05 57 17 59 22 36 03 56 9.9 0.5 5 0050-0001 WED SEP 05 18 44 19 22 19 49 20 30 04 53 05 19 05 57 18 02 22 40 04 00 9.9 1.1 11 0134+0448 THU SEP 06 18 43 19 21 19 48 21 06 04 53 05 19 05 57 18 05 22 44 04 04 10.0 1.8 17 0220+0931 FRI SEP 07 18 42 19 21 19 47 21 43 04 54 05 20 05 58 18 08 22 48 04 09 10.0 2.4 23 0308+1355 SAT SEP 08 18 42 19 20 19 46 22 24 04 54 05 20 05 58 18 11 22 52 04 13 10.0 3.1 30 0358+1747 SUN SEP 09 18 41 19 19 19 45 23 09 04 54 05 20 05 58 18 14 22 56 04 17 10.0 3.8 38 0452+2052 MON SEP 10 18 40 19 18 19 44 00 00 04 54 05 20 05 58 18 17 23 00 04 21 10.0 4.7 46 0549+2255 TUE SEP 11 18 39 19 17 19 43 00 57 04 55 05 21 05 59 18 20 23 04 04 26 10.1 5.7 56 0649+2340 WED SEP 12 18 38 19 16 19 42 01 59 04 55 05 21 05 59 18 23 23 08 04 30 10.1 6.7 66 0751+2255 THU SEP 13 18 37 19 15 19 41 03 04 16 01 04 55 05 21 05 59 18 26 23 12 04 34 10.1 7.8 77 0854+2036 FRI SEP 14 18 36 19 14 19 40 04 11 16 56 04 56 05 21 05 59 18 29 23 16 04 38 10.1 8.9 88 0955+1652 SAT SEP 15 18 35 19 13 19 39 05 16 17 46 04 56 05 22 05 59 18 32 23 20 04 43 10.1 10.0 99 1054+1158 SUN SEP 16 18 34 19 12 19 38 06 21 18 33 04 56 05 22 06 00 18 35 23 24 04 47 10.2 10.2 100 1151+0619 MON SEP 17 18 33 19 11 19 37 07 23 19 17 04 56 05 22 06 00 18 38 23 28 04 51 10.2 10.1 99 1246+0020 TUE SEP 18 18 32 19 10 19 36 20 01 04 57 05 22 06 00 18 41 23 32 04 55 10.2 9.4 91 1341-0532 WED SEP 19 18 32 19 09 19 35 20 44 04 57 05 23 06 00 18 44 23 36 04 59 10.2 8.6 84 1434-1059 THU SEP 20 18 31 19 08 19 34 21 28 04 57 05 23 06 00 18 47 23 40 05 03 10.2 7.9 77 1528-1541 FRI SEP 21 18 30 19 07 19 33 22 13 04 57 05 23 06 01 18 50 23 43 05 07 10.3 7.2 69 1622-1925 SAT SEP 22 18 29 19 06 19 32 23 01 04 58 05 23 06 01 18 53 23 47 05 11 10.3 6.4 61 1717-2203 SUN SEP 23 18 28 19 05 19 31 23 51 04 58 05 23 06 01 18 56 23 51 05 15 10.3 5.5 53 1811-2329 MON SEP 24 18 27 19 05 19 30 00 42 04 58 05 24 06 01 18 59 23 55 05 20 10.3 4.7 45 1905-2344 TUE SEP 25 18 26 19 04 19 29 01 33 04 58 05 24 06 01 19 02 23 59 05 24 10.3 3.9 37 1957-2252 WED SEP 26 18 25 19 03 19 28 02 25 04 59 05 24 06 02 19 05 00 03 05 28 10.4 3.0 28 2048-2058 THU SEP 27 18 24 19 02 19 27 03 16 04 59 05 24 06 02 19 08 00 07 05 32 10.4 2.1 20 2137-1811 FRI SEP 28 18 23 19 01 19 26 16 10 04 06 04 59 05 25 06 02 19 11 00 11 05 37 10.4 1.3 12 2224-1439 SAT SEP 29 18 22 19 00 19 26 16 47 04 56 04 59 05 25 06 02 19 14 00 15 05 41 10.4 0.5 4 2310-1032 SUN SEP 30 18 22 18 59 19 25 17 23 05 44 04 59 05 25 06 03 19 17 00 19 05 45 10.4 0.0 0 2354-0559 ONE LINE REFERS TO EVENING DATE FULL MOON SEP 02 21:46 UT AND FOLLOWING MORNING. LAST QUARTER SEP 10 19:03 UT All dates and times are zone HST NEW MOON SEP 17 10:30 UT in upper table (except sid time). FIRST QUARTER SEP 24 09:32 UT