KECK OBSERVATORY CALENDAR FOR 2017 -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 2017 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 SUN OCT 01 18 21 18 58 19 24 15 30 03 35 05 00 05 25 06 03 19 47 00 23 05 24 9.6 1.4 14 2158-1308 49 MON OCT 02 18 20 18 57 19 23 16 13 04 30 05 00 05 26 06 03 19 50 00 27 05 28 9.6 0.5 5 2249-0927 38 TUE OCT 03 18 19 18 57 19 22 16 56 05 25 05 00 05 26 06 03 19 52 00 31 05 32 9.6 0.0 0 2341-0512 28 WED OCT 04 18 18 18 56 19 21 17 38 06 22 05 00 05 26 06 04 19 55 00 35 05 36 9.6 0.0 0 0034-0035 20 THU OCT 05 18 17 18 55 19 20 18 21 05 01 05 26 06 04 19 58 00 39 05 41 9.7 0.0 0 0128 0410 20 FRI OCT 06 18 16 18 54 19 19 19 06 05 01 05 26 06 04 20 01 00 43 05 45 9.7 0.0 0 0223 0844 27 SAT OCT 07 18 16 18 53 19 19 19 53 05 01 05 27 06 04 20 05 00 47 05 49 9.7 0.6 5 0320 1248 37 SUN OCT 08 18 15 18 52 19 18 20 44 05 01 05 27 06 05 20 08 00 51 05 53 9.7 1.4 14 0419 1604 49 MON OCT 09 18 14 18 52 19 17 21 38 05 02 05 27 06 05 20 11 00 55 05 58 9.8 2.4 24 0519 1817 62 TUE OCT 10 18 13 18 51 19 16 22 34 05 02 05 27 06 05 20 14 00 59 06 02 9.8 3.3 33 0619 1916 75 WED OCT 11 18 12 18 50 19 15 23 33 05 02 05 28 06 05 20 17 01 03 06 06 9.8 4.3 43 0719 1856 87 THU OCT 12 18 12 18 49 19 15 00 33 05 02 05 28 06 06 20 21 01 07 06 10 9.8 5.3 54 0818 1735 >90 FRI OCT 13 18 11 18 48 19 14 01 32 14 14 05 03 05 28 06 06 20 24 01 11 06 14 9.8 6.3 64 0915 1507 >90 SAT OCT 14 18 10 18 48 19 13 02 30 15 02 05 03 05 29 06 06 20 27 01 15 06 18 9.8 7.3 74 1009 1151 >90 SUN OCT 15 18 09 18 47 19 12 03 26 15 47 05 03 05 29 06 07 20 30 01 19 06 22 9.8 8.2 83 1101 0800 >90 MON OCT 16 18 08 18 46 19 12 04 20 16 29 05 04 05 29 06 07 20 34 01 22 06 27 9.9 9.1 92 1151 0350 >90 TUE OCT 17 18 08 18 46 19 11 05 14 17 10 05 04 05 29 06 07 20 37 01 26 06 31 9.9 9.9 100 1239-0028 >90 WED OCT 18 18 07 18 45 19 10 06 06 17 49 05 04 05 30 06 08 20 40 01 30 06 35 9.9 9.9 100 1327-0441 >90 THU OCT 19 18 06 18 44 19 10 06 57 18 29 05 04 05 30 06 08 20 44 01 34 06 39 9.9 9.9 100 1414-0838 >90 FRI OCT 20 18 06 18 43 19 09 19 09 05 05 05 30 06 08 20 46 01 38 06 44 9.9 9.9 100 1502-1211 >90 SAT OCT 21 18 05 18 43 19 08 19 50 05 05 05 31 06 09 20 49 01 42 06 48 10.0 9.2 92 1550-1510 >90 SUN OCT 22 18 04 18 42 19 08 20 32 05 05 05 31 06 09 20 53 01 46 06 52 10.0 8.6 85 1638-1731 >90 MON OCT 23 18 04 18 42 19 07 21 17 05 06 05 31 06 09 20 56 01 50 06 57 10.0 7.8 78 1727-1906 >90 TUE OCT 24 18 03 18 41 19 07 22 03 05 06 05 32 06 10 21 00 01 54 07 01 10.0 7.1 70 1817-1953 >90 WED OCT 25 18 02 18 40 19 06 22 51 05 06 05 32 06 10 21 03 01 58 07 05 10.0 6.2 62 1907-1948 >90 THU OCT 26 18 02 18 40 19 06 23 40 05 07 05 32 06 10 21 07 02 02 07 10 10.0 5.5 54 1957-1851 >90 FRI OCT 27 18 01 18 39 19 05 00 31 05 07 05 33 06 11 21 10 02 06 07 14 10.0 4.6 45 2048-1659 86 SAT OCT 28 18 00 18 39 19 05 01 23 05 07 05 33 06 11 21 14 02 10 07 18 10.0 3.7 37 2138-1425 75 SUN OCT 29 18 00 18 38 19 04 14 06 02 16 05 08 05 33 06 12 21 17 02 14 07 23 10.1 2.9 28 2228-1107 64 MON OCT 30 17 59 18 38 19 04 14 48 03 10 05 08 05 34 06 12 21 21 02 18 07 27 10.1 2.0 19 2319-0707 52 TUE OCT 31 17 59 18 37 19 03 15 29 04 06 05 08 05 34 06 13 21 24 02 22 07 30 10.1 1.0 10 0010-0238 39 ONE LINE REFERS TO EVENING DATE FULL MOON Oct 05 18:39 UT AND FOLLOWING MORNING. LAST QUARTER Oct 12 12:26 UT All dates and times are zone HST NEW MOON Oct 19 19:10 UT in upper table (except sid time). FIRST QUARTER Oct 27 22:22 UT