KECK OBSERVATORY CALENDAR FOR 2027 -ASTRONOMICAL (computed for altitude 4160.0 m) ASTRONOMICAL(18 deg) TWILIGHT/DAWN MOON(midnight) DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (18 deg) Zenith 2027 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ RA DEC Dist 12 18 18 12 18 18 h h % h m d m deg FRI OCT 01 18 21 18 58 19 24 19 32 05 00 05 25 06 03 19 45 00 22 05 23 9.6 9.5 98 1419-1928 >90 SAT OCT 02 18 20 18 57 19 23 20 18 05 00 05 26 06 03 19 48 00 26 05 26 9.6 8.7 90 1514-2318 >90 SUN OCT 03 18 19 18 57 19 22 21 08 05 00 05 26 06 03 19 51 00 30 05 30 9.6 7.9 81 1610-2551 >90 MON OCT 04 18 18 18 56 19 21 22 00 05 00 05 26 06 04 19 54 00 34 05 34 9.6 7.0 72 1706-2700 >90 TUE OCT 05 18 17 18 55 19 20 22 53 05 01 05 26 06 04 19 57 00 37 05 39 9.7 6.1 63 1801-2648 >90 WED OCT 06 18 16 18 54 19 19 23 48 05 01 05 26 06 04 20 00 00 41 05 43 9.7 5.2 53 1854-2520 >90 THU OCT 07 18 16 18 53 19 19 00 41 05 01 05 27 06 04 20 04 00 45 05 47 9.7 4.3 44 1945-2241 85 FRI OCT 08 18 15 18 52 19 18 01 33 05 01 05 27 06 05 20 07 00 49 05 51 9.7 3.5 35 2034-1914 74 SAT OCT 09 18 14 18 52 19 17 14 27 02 23 05 02 05 27 06 05 20 09 00 53 05 56 9.8 2.7 27 2120-1456 63 SUN OCT 10 18 13 18 51 19 16 15 02 03 12 05 02 05 27 06 05 20 12 00 57 06 00 9.8 1.8 18 2205-1001 52 MON OCT 11 18 12 18 50 19 15 15 35 04 01 05 02 05 28 06 05 20 15 01 01 06 04 9.8 1.0 10 2249-0441 41 TUE OCT 12 18 12 18 49 19 15 16 08 04 51 05 02 05 28 06 06 20 19 01 05 06 08 9.8 0.2 1 2334 0055 29 WED OCT 13 18 11 18 48 19 14 16 41 05 42 05 03 05 28 06 06 20 22 01 09 06 13 9.8 0.0 0 0019 0635 18 THU OCT 14 18 10 18 48 19 13 17 15 06 35 05 03 05 29 06 06 20 25 01 13 06 17 9.8 0.0 0 0106 1204 08 FRI OCT 15 18 09 18 47 19 12 17 53 05 03 05 29 06 07 20 28 01 17 06 21 9.8 0.0 0 0156 1707 10 SAT OCT 16 18 08 18 46 19 12 18 35 05 04 05 29 06 07 20 32 01 21 06 26 9.9 0.0 0 0250 2125 21 SUN OCT 17 18 08 18 46 19 11 19 22 05 04 05 29 06 07 20 35 01 25 06 30 9.9 0.2 1 0347 2437 33 MON OCT 18 18 07 18 45 19 10 20 15 05 04 05 30 06 08 20 38 01 29 06 34 9.9 1.1 10 0448 2625 46 TUE OCT 19 18 06 18 44 19 10 21 14 05 04 05 30 06 08 20 42 01 33 06 37 9.9 2.1 20 0550 2635 59 WED OCT 20 18 06 18 43 19 09 22 17 05 05 05 30 06 08 20 45 01 37 06 42 9.9 3.1 31 0651 2504 72 THU OCT 21 18 05 18 43 19 08 23 21 05 05 05 31 06 09 20 48 01 41 06 46 10.0 4.2 42 0751 2157 85 FRI OCT 22 18 04 18 42 19 08 00 24 05 05 05 31 06 09 20 52 01 44 06 50 10.0 5.3 52 0848 1736 >90 SAT OCT 23 18 04 18 42 19 07 01 26 14 02 05 06 05 31 06 09 20 55 01 48 06 55 10.0 6.3 63 0943 1213 >90 SUN OCT 24 18 03 18 41 19 07 02 26 14 43 05 06 05 32 06 10 20 59 01 52 06 59 10.0 7.3 73 1035 0612 >90 MON OCT 25 18 02 18 40 19 06 03 25 15 22 05 06 05 32 06 10 21 01 01 56 07 03 10.0 8.3 83 1125-0007 >90 TUE OCT 26 18 02 18 40 19 06 04 24 16 01 05 07 05 32 06 10 21 05 02 00 07 08 10.0 9.3 92 1216-0624 >90 WED OCT 27 18 01 18 39 19 05 05 22 16 41 05 07 05 33 06 11 21 08 02 04 07 12 10.0 10.0 100 1307-1218 >90 THU OCT 28 18 00 18 39 19 05 06 22 17 23 05 07 05 33 06 11 21 12 02 08 07 16 10.0 10.0 100 1359-1730 >90 FRI OCT 29 18 00 18 38 19 04 18 08 05 08 05 33 06 12 21 15 02 12 07 21 10.1 10.1 100 1453-2144 >90 SAT OCT 30 17 59 18 38 19 04 18 56 05 08 05 34 06 12 21 19 02 16 07 25 10.1 10.1 100 1549-2445 >90 SUN OCT 31 17 59 18 37 19 03 19 48 05 08 05 34 06 13 21 22 02 20 07 29 10.1 9.3 92 1646-2623 >90 ONE LINE REFERS TO EVENING DATE FIRST QUARTER Oct 07 11:48 UT AND FOLLOWING MORNING. FULL MOON Oct 15 13:46 UT All dates and times are zone HST LAST QUARTER Oct 22 17:29 UT in upper table (except sid time). NEW MOON Oct 29 13:36 UT