*** Almanac for the currently specified date ***:
Almanac for Roque de los Muchachos:
long.   1 11 31 (h.m.s) W, lat.  28 45.5 (d.m), elev.  2326 m
pseudo-Greenwich Daylight Savings Time assumed from 2 AM on
1998 Mar 29 to 2 AM on 1998 Sep 27; standard zone =   0 hrs W

For the night of: Thu, 1998 May 7 ---> Fri, 1998 May 8
Local midnight = 1998 May 7, 23 hr UT, or JD 2450941.458
Local Mean Sidereal Time at midnight =  12 50 48.3

Sunset ( 2326 m horizon):   20 58 GDT; Sunrise:    7 18 GDT
Evening twilight:   22 18 GDT;  LMST at evening twilight:   11 08
Morning twilight:    5 58 GDT;  LMST at morning twilight:   18 50
12-degr twilight:  21 46 GDT -->   6 30 GDT; night center:    2 08 GDT

Moonrise:   17 21 GDT   Moonset :    5 53 GDT   
Moon at civil midnight: illuminated fraction 0.884
3.6 days until full moon, RA and dec:  12 30 07,  -1 03.1

The sun is down for 10.3 hr;  7.7 hr from eve->morn 18 deg twilight.
 0.1 dark hours after moonset and before beginning of twilight.


*** Almanac for the currently specified date ***:
Almanac for Roque de los Muchachos:
long.   1 11 31 (h.m.s) W, lat.  28 45.5 (d.m), elev.  2326 m
pseudo-Greenwich Daylight Savings Time assumed from 2 AM on
1998 Mar 29 to 2 AM on 1998 Sep 27; standard zone =   0 hrs W

For the night of: Thu, 1998 May 7 ---> Fri, 1998 May 8
Local midnight = 1998 May 7, 23 hr UT, or JD 2450941.458
Local Mean Sidereal Time at midnight =  12 50 48.3

Sunset ( 2326 m horizon):   20 58 GDT; Sunrise:    7 18 GDT
Evening twilight:   22 18 GDT;  LMST at evening twilight:   11 08
Morning twilight:    5 58 GDT;  LMST at morning twilight:   18 50
12-degr twilight:  21 46 GDT -->   6 30 GDT; night center:    2 08 GDT

Moonrise:   17 21 GDT   Moonset :    5 53 GDT   
Moon at civil midnight: illuminated fraction 0.884
3.6 days until full moon, RA and dec:  12 30 07,  -1 03.1

The sun is down for 10.3 hr;  7.7 hr from eve->morn 18 deg twilight.
 0.1 dark hours after moonset and before beginning of twilight.