Astronomical Alamanac for Aug 18, 2019
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*** Almanac for the currently specified date ***:
Almanac for Cerro Tololo:
long. 4 43 16 (h.m.s) W, lat. -30 09.9 (d.m), elev. 2215 m
Chilean Daylight Savings Time used before 2 AM
2019 Mar 10 and after 2 AM 2019 Oct 13; standard zone = 4 hrs W
For the night of: Sun, 2019 Aug 18 ---> Mon, 2019 Aug 19
Local midnight = 2019 Aug 19, 4 hr UT, or JD 2458714.667
Local Mean Sidereal Time at midnight = 21 05 38.1
Sunset ( 2215 m horizon): 18 28 CST; Sunrise: 7 06 CST
Evening twilight: 19 41 CST; LMST at evening twilight: 16 46
Morning twilight: 5 53 CST; LMST at morning twilight: 2 59
12-degr twilight: 19 13 CST --> 6 21 CST; night center: 0 47 CST
Moonrise: 21 05 CST
Moon at civil midnight: illuminated fraction 0.879
3.6 days after full moon, RA and dec: 0 31 20, -1 57.4
The sun is down for 12.6 hr; 10.2 hr from eve->morn 18 deg twilight.
1.4 dark hours after end of twilight and before moonrise.
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