KECK OBSERVATORY CALENDAR FOR 2001 -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 2001 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 18 18 h h % midnight MON OCT 01 18 21 18 58 19 24 17 57 06 33 05 00 05 25 06 03 19 46 00 23 05 24 9.6 0.0 0 0039-0111 TUE OCT 02 18 20 18 57 19 23 18 31 07 23 05 00 05 25 06 03 19 49 00 27 05 28 9.6 0.0 0 0123+0344 WED OCT 03 18 19 18 56 19 22 19 06 05 00 05 26 06 03 19 52 00 31 05 32 9.6 0.0 0 0209+0834 THU OCT 04 18 18 18 56 19 21 19 43 05 00 05 26 06 04 19 55 00 35 05 36 9.6 0.4 3 0256+1307 FRI OCT 05 18 17 18 55 19 20 20 23 05 01 05 26 06 04 19 58 00 39 05 40 9.7 1.0 10 0346+1711 SAT OCT 06 18 16 18 54 19 19 21 07 05 01 05 26 06 04 20 01 00 43 05 44 9.7 1.8 18 0439+2029 SUN OCT 07 18 16 18 53 19 19 21 55 05 01 05 27 06 04 20 05 00 47 05 48 9.7 2.6 26 0535+2248 MON OCT 08 18 15 18 52 19 18 22 49 05 01 05 27 06 05 20 08 00 50 05 52 9.7 3.5 36 0633+2352 TUE OCT 09 18 14 18 51 19 17 23 47 05 02 05 27 06 05 20 11 00 54 05 57 9.8 4.5 46 0733+2333 WED OCT 10 18 13 18 51 19 16 00 49 05 02 05 27 06 05 20 14 00 58 06 01 9.8 5.6 56 0833+2146 THU OCT 11 18 12 18 50 19 15 01 53 05 02 05 28 06 05 20 17 01 02 06 05 9.8 6.6 67 0933+1834 FRI OCT 12 18 11 18 49 19 15 02 57 05 02 05 28 06 06 20 20 01 06 06 09 9.8 7.7 78 1031+1409 SAT OCT 13 18 11 18 48 19 14 04 01 16 23 05 03 05 28 06 06 20 23 01 10 06 14 9.8 8.8 89 1127+0850 SUN OCT 14 18 10 18 48 19 13 05 03 17 07 05 03 05 29 06 06 20 26 01 14 06 18 9.8 9.8 100 1222+0259 MON OCT 15 18 09 18 47 19 12 06 04 17 50 05 03 05 29 06 07 20 29 01 18 06 22 9.8 9.8 100 1317-0300 TUE OCT 16 18 08 18 46 19 12 07 05 18 33 05 03 05 29 06 07 20 33 01 22 06 26 9.8 9.8 100 1411-0846 WED OCT 17 18 08 18 45 19 11 19 17 05 04 05 29 06 07 20 36 01 26 06 31 9.9 9.8 98 1505-1357 THU OCT 18 18 07 18 45 19 10 20 02 05 04 05 30 06 08 20 39 01 30 06 35 9.9 9.0 91 1600-1814 FRI OCT 19 18 06 18 44 19 10 20 50 05 04 05 30 06 08 20 43 01 34 06 39 9.9 8.2 83 1656-2125 SAT OCT 20 18 06 18 43 19 09 21 41 05 05 05 30 06 08 20 46 01 38 06 44 9.9 7.4 74 1752-2321 SUN OCT 21 18 05 18 43 19 08 22 33 05 05 05 31 06 09 20 49 01 42 06 48 10.0 6.5 65 1847-2402 MON OCT 22 18 04 18 42 19 08 23 25 05 05 05 31 06 09 20 53 01 46 06 52 10.0 5.7 56 1941-2330 TUE OCT 23 18 03 18 42 19 07 00 18 05 06 05 31 06 09 20 56 01 50 06 56 10.0 4.8 48 2033-2153 WED OCT 24 18 03 18 41 19 07 01 10 05 06 05 32 06 10 21 00 01 54 07 00 10.0 3.9 39 2123-1918 THU OCT 25 18 02 18 40 19 06 02 00 05 06 05 32 06 10 21 03 01 58 07 04 10.0 3.1 31 2211-1557 FRI OCT 26 18 02 18 40 19 06 02 50 05 06 05 32 06 10 21 07 02 01 07 08 10.0 2.3 22 2256-1157 SAT OCT 27 18 01 18 39 19 05 03 39 05 07 05 33 06 11 21 10 02 05 07 13 10.0 1.5 14 2341-0729 SUN OCT 28 18 00 18 39 19 05 04 27 05 07 05 33 06 11 21 14 02 09 07 17 10.0 0.7 6 0026-0241 MON OCT 29 18 00 18 38 19 04 16 31 05 17 05 07 05 33 06 12 21 16 02 13 07 21 10.0 0.0 0 0110+0216 TUE OCT 30 17 59 18 38 19 04 17 06 06 08 05 08 05 34 06 12 21 20 02 17 07 26 10.1 0.0 0 0156+0714 WED OCT 31 17 59 18 37 19 03 17 42 07 01 05 08 05 34 06 13 21 23 02 21 07 30 10.1 0.0 0 0243+1159 ONE LINE REFERS TO EVENING DATE FULL MOON OCT 02 13:52 UT AND FOLLOWING MORNING. LAST QUARTER OCT 10 04:23 UT All dates and times are zone HST NEW MOON OCT 16 19:27 UT in upper table (except sid time). FIRST QUARTER OCT 24 03:01 UT