Type the UT date and time in the (red border) box below, and then press the 'calculate' button. The program will calculate various parameters for the Moon at the instant you have chosen.
Save this page to your hard drive for use off-line - it will still work. ▼
Type in the UT date and time
Date format: The date 21st Dec 2013 at 23:50 is entered as 20131221.2350                                            ▼

Enter UT date in                   yyyymmdd.hhmm         format:

Results: Physical Ephemeris of Moon
Selenographic longitudes towards Mare Crisium are taken as positive. All figures here are based on geocentric coordinates, and position angles relate to the North Celestial Pole.
Libration in Latitude (B):
Libration in Longitude (L):
Colongitude of the Sun (Co):
Subsolar point Lat (Bo):
Subsolar point Long (Lo):
Selenographic Longitude of terminator:
Illuminated fraction of Moon's disc:
Position angle of bright limb:
Position angle of polar axis:
Results: Time
Days since J2000.0:
Julian Day Number:
Results: Sun's position
Distance (AU):
Right Ascension:
Results: Moon's position
Distance (Earth radii):
Right Ascension: