KECK OBSERVATORY CALENDAR FOR 2017 -NAUTICAL (computed for altitude 4160.0 m) NAUTICAL(12 deg) TWILIGHT/DAWN MOON(midnight) DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (12 deg) Zenith 2017 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ RA DEC Dist 12 18 18 12 12 12 h h % h m d m deg FRI SEP 01 18 48 19 26 19 53 15 21 03 09 04 52 05 18 05 56 17 50 22 25 03 44 9.9 2.2 21 1943-1909 56 SAT SEP 02 18 47 19 25 19 52 16 08 04 00 04 52 05 18 05 57 17 53 22 29 03 48 9.9 1.3 13 2035-1733 47 SUN SEP 03 18 46 19 24 19 51 16 53 04 54 04 52 05 19 05 57 17 56 22 33 03 53 9.9 0.4 4 2127-1504 39 MON SEP 04 18 45 19 23 19 50 17 37 05 47 04 53 05 19 05 57 17 59 22 37 03 57 9.9 0.0 0 2218-1149 32 TUE SEP 05 18 44 19 22 19 49 18 20 06 42 04 53 05 19 05 57 18 02 22 41 04 01 9.9 0.0 0 2310-0755 29 WED SEP 06 18 43 19 21 19 48 19 02 04 53 05 19 05 57 18 05 22 45 04 05 10.0 0.0 0 0002-0334 30 THU SEP 07 18 43 19 21 19 47 19 44 04 54 05 20 05 58 18 09 22 49 04 10 10.0 0.4 3 0054 0101 36 FRI SEP 08 18 42 19 20 19 46 20 27 04 54 05 20 05 58 18 12 22 53 04 14 10.0 1.1 11 0147 0534 45 SAT SEP 09 18 41 19 19 19 45 21 11 04 54 05 20 05 58 18 15 22 57 04 17 10.0 1.9 18 0241 0951 55 SUN SEP 10 18 40 19 18 19 44 21 59 04 54 05 20 05 58 18 18 23 01 04 21 10.0 2.7 26 0337 1333 66 MON SEP 11 18 39 19 17 19 43 22 49 04 55 05 21 05 59 18 21 23 04 04 26 10.1 3.5 35 0434 1626 78 TUE SEP 12 18 38 19 16 19 42 23 42 04 55 05 21 05 59 18 24 23 08 04 30 10.1 4.4 43 0531 1810 89 WED SEP 13 18 37 19 15 19 41 00 39 04 55 05 21 05 59 18 27 23 12 04 34 10.1 5.4 53 0633 1902 >90 THU SEP 14 18 36 19 14 19 40 01 38 14 30 04 56 05 21 05 59 18 30 23 16 04 38 10.1 6.4 63 0732 1830 >90 FRI SEP 15 18 35 19 13 19 39 02 39 15 25 04 56 05 22 05 59 18 32 23 20 04 43 10.1 7.4 73 0831 1650 >90 SAT SEP 16 18 34 19 12 19 38 03 38 16 17 04 56 05 22 06 00 18 35 23 24 04 47 10.2 8.4 82 0927 1409 >90 SUN SEP 17 18 33 19 11 19 37 04 37 17 05 04 56 05 22 06 00 18 38 23 28 04 51 10.2 9.4 92 1022 1042 >90 MON SEP 18 18 32 19 10 19 36 05 34 17 50 04 57 05 22 06 00 18 41 23 32 04 55 10.2 10.2 100 1114 0643 >90 TUE SEP 19 18 32 19 09 19 35 06 29 18 33 04 57 05 23 06 00 18 44 23 36 05 00 10.2 10.2 100 1204 0228 >90 WED SEP 20 18 31 19 08 19 34 19 14 04 57 05 23 06 00 18 47 23 40 05 04 10.2 10.1 99 1253-0151 >90 THU SEP 21 18 30 19 07 19 33 19 53 04 57 05 23 06 01 18 50 23 44 05 08 10.3 9.5 92 1341-0600 >90 FRI SEP 22 18 29 19 06 19 32 20 33 04 58 05 23 06 01 18 53 23 48 05 12 10.3 8.8 85 1429-0949 >90 SAT SEP 23 18 28 19 05 19 31 21 13 04 58 05 23 06 01 18 56 23 52 05 16 10.3 8.2 79 1517-1311 >90 SUN SEP 24 18 27 19 05 19 30 21 55 04 58 05 24 06 01 19 00 23 56 05 21 10.3 7.5 72 1605-1557 >90 MON SEP 25 18 26 19 04 19 29 22 38 04 58 05 24 06 01 19 03 00 00 05 25 10.3 6.8 65 1653-1803 >90 TUE SEP 26 18 25 19 03 19 28 23 23 04 59 05 24 06 02 19 06 00 04 05 29 10.4 6.0 58 1743-1922 >90 WED SEP 27 18 24 19 02 19 27 00 10 04 59 05 24 06 02 19 09 00 08 05 32 10.4 5.2 50 1836-1934 >90 THU SEP 28 18 23 19 01 19 26 00 59 04 59 05 25 06 02 19 12 00 12 05 37 10.4 4.4 42 1924-1927 81 FRI SEP 29 18 23 19 00 19 26 14 00 01 50 04 59 05 25 06 02 19 15 00 15 05 41 10.4 3.6 34 2015-1814 70 SAT SEP 30 18 22 18 59 19 25 14 46 02 42 05 00 05 25 06 03 19 18 00 19 05 45 10.4 2.7 26 2106-1606 60 ONE LINE REFERS TO EVENING DATE FULL MOON Sep 06 07:01 UT AND FOLLOWING MORNING. LAST QUARTER Sep 13 06:26 UT All dates and times are zone HST NEW MOON Sep 20 05:29 UT in upper table (except sid time). FIRST QUARTER Sep 28 02:55 UT