KECK OBSERVATORY CALENDAR FOR 1999 -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 1999 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 12 12 h h % midnight FRI OCT 01 18 21 18 58 19 24 23 50 05 00 05 25 06 03 19 18 00 21 05 47 10.4 4.9 46 0656+2023 SAT OCT 02 18 20 18 57 19 23 00 48 05 00 05 25 06 03 19 21 00 25 05 51 10.5 5.8 55 0755+1930 SUN OCT 03 18 19 18 56 19 22 01 47 05 00 05 26 06 03 19 24 00 29 05 56 10.5 6.9 65 0852+1730 MON OCT 04 18 18 18 56 19 21 02 45 05 00 05 26 06 04 19 28 00 33 06 00 10.5 7.8 74 0947+1433 TUE OCT 05 18 17 18 55 19 20 03 41 16 11 05 01 05 26 06 04 19 31 00 37 06 04 10.5 8.8 83 1039+1053 WED OCT 06 18 16 18 54 19 19 04 36 16 54 05 01 05 26 06 04 19 34 00 41 06 07 10.5 9.7 92 1129+0644 THU OCT 07 18 16 18 53 19 19 05 28 17 34 05 01 05 27 06 04 19 37 00 45 06 12 10.6 10.6 100 1218+0221 FRI OCT 08 18 15 18 52 19 18 06 20 18 12 05 01 05 27 06 05 19 40 00 48 06 16 10.6 10.6 100 1305-0203 SAT OCT 09 18 14 18 51 19 17 07 11 18 50 05 02 05 27 06 05 19 43 00 52 06 20 10.6 10.6 100 1352-0619 SUN OCT 10 18 13 18 51 19 16 19 28 05 02 05 27 06 05 19 46 00 56 06 24 10.6 10.0 94 1439-1015 MON OCT 11 18 12 18 50 19 15 20 07 05 02 05 28 06 05 19 49 01 00 06 29 10.6 9.3 87 1526-1343 TUE OCT 12 18 11 18 49 19 15 20 47 05 02 05 28 06 06 19 52 01 04 06 33 10.6 8.7 81 1614-1635 WED OCT 13 18 11 18 48 19 14 21 30 05 03 05 28 06 06 19 55 01 08 06 37 10.7 8.0 74 1703-1844 THU OCT 14 18 10 18 48 19 13 22 15 05 03 05 29 06 06 19 59 01 12 06 42 10.7 7.2 67 1753-2005 FRI OCT 15 18 09 18 47 19 12 23 02 05 03 05 29 06 07 20 02 01 16 06 46 10.7 6.5 60 1844-2033 SAT OCT 16 18 08 18 46 19 12 23 51 05 03 05 29 06 07 20 05 01 20 06 50 10.7 5.6 52 1935-2005 SUN OCT 17 18 08 18 45 19 11 00 42 05 04 05 29 06 07 20 08 01 24 06 54 10.7 4.8 44 2026-1841 MON OCT 18 18 07 18 45 19 10 01 35 05 04 05 30 06 08 20 12 01 28 06 59 10.8 3.9 36 2118-1622 TUE OCT 19 18 06 18 44 19 10 02 29 05 04 05 30 06 08 20 15 01 32 07 03 10.8 3.0 28 2209-1311 WED OCT 20 18 06 18 43 19 09 03 25 05 05 05 30 06 08 20 18 01 36 07 07 10.8 2.1 19 2301-0914 THU OCT 21 18 05 18 43 19 08 04 22 05 05 05 31 06 09 20 22 01 40 07 12 10.8 1.1 10 2353-0441 FRI OCT 22 18 04 18 42 19 08 16 37 05 21 05 05 05 31 06 09 20 25 01 44 07 16 10.8 0.2 1 0046+0014 SAT OCT 23 18 03 18 42 19 07 17 21 06 22 05 06 05 31 06 09 20 29 01 48 07 19 10.8 0.0 0 0141+0518 SUN OCT 24 18 03 18 41 19 07 18 07 07 24 05 06 05 32 06 10 20 32 01 52 07 24 10.9 0.0 0 0237+1008 MON OCT 25 18 02 18 40 19 06 18 56 05 06 05 32 06 10 20 35 01 55 07 28 10.9 0.3 2 0336+1424 TUE OCT 26 18 02 18 40 19 06 19 48 05 06 05 32 06 10 20 39 01 59 07 32 10.9 1.1 10 0436+1744 WED OCT 27 18 01 18 39 19 05 20 44 05 07 05 33 06 11 20 41 02 03 07 37 10.9 2.1 19 0538+1951 THU OCT 28 18 00 18 39 19 05 21 42 05 07 05 33 06 11 20 45 02 07 07 41 10.9 3.1 27 0640+2038 FRI OCT 29 18 00 18 38 19 04 22 42 05 07 05 33 06 12 20 48 02 11 07 45 10.9 4.1 37 0741+2004 SAT OCT 30 17 59 18 38 19 04 23 42 05 08 05 34 06 12 20 52 02 15 07 50 10.9 5.1 46 0839+1817 SUN OCT 31 17 59 18 37 19 03 00 41 05 08 05 34 06 13 20 55 02 19 07 54 10.9 6.1 55 0935+1530 ONE LINE REFERS TO EVENING DATE LAST QUARTER OCT 02 04:05 UT AND FOLLOWING MORNING. NEW MOON OCT 09 11:35 UT All dates and times are zone HST FIRST QUARTER OCT 17 15:03 UT in upper table (except sid time). FULL MOON OCT 24 21:06 UT LAST QUARTER OCT 31 12:06 UT