The ESO Sky Calendar Tool

Almanac

Roque de los Muchachos, La Palma
Thu, July 31, 2003

pseudo-Greenwich Daylight Savings Time assumed from 2 AM on
2003 Mar 30 to 2 AM on 2003 Sep 28; standard zone =   0 hrs W

For the night of: Thu, 2003 Jul 31 ---> Fri, 2003 Aug 1
Local midnight = 2003 Jul 31,    hr UT, or JD 2452852.458
Local Mean Sidereal Time at midnight =  18 25 05.6

Sunset ( 2326 m horizon):   21 11 GDT; Sunrise:    7 25 GDT
Evening twilight:   22 32 GDT;  LMST at evening twilight:   16 57
Morning twilight:    6 04 GDT;  LMST at morning twilight:    0 30
12-degr twilight:  22 00 GDT -->   6 36 GDT; night center:    2 18 GDT

Moonset :   23 06 GDT   
Moon at civil midnight: illuminated fraction 0.081
2.7 days since new moon, RA and dec:  10 56 47,  11 09.3

The sun is down for 10.2 hr;  7.5 hr from eve->morn 18 deg twilight.
 7.0 dark hours after moonset and before beginning of twilight.

SkyCalc provided by courtesy of John Thorstensen, Dartmouth College. John.Thorstensen@dartmouth.edu