*** Almanac for the currently specified date ***:
Almanac for ESO, Cerro La Silla:
long.   4 42 55 (h.m.s) W, lat. -29 15.4 (d.m), elev.  2347 m
Chilean Daylight Savings Time used before 2 AM 
2001 Mar 11 and after 2 AM 2001 Oct 14; standard zone =   4 hrs W

For the night of: Wed, 2001 Apr 11 ---> Thu, 2001 Apr 12
Local midnight = 2001 Apr 12,  4 hr UT, or JD 2452011.667
Local Mean Sidereal Time at midnight =  12 38 48.0

Sunset ( 2347 m horizon):   18 35 CST; Sunrise:    6 52 CST
Evening twilight:   19 47 CST;  LMST at evening twilight:    8 25
Morning twilight:    5 41 CST;  LMST at morning twilight:   18 20
12-degr twilight:  19 20 CST -->   6 08 CST; night center:    0 44 CST

Moonrise:   21 09 CST   
Moon at civil midnight: illuminated fraction 0.811
4.0 days after full moon, RA and dec:  16 51 02, -19 50.5

The sun is down for 12.3 hr;  9.9 hr from eve->morn 18 deg twilight.
 1.4 dark hours after end of twilight and before moonrise.