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Earth Day/Night Clock
Enter UTC Date:
Enter Local Time:
East Time Zone:     
East Longitude °
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Julian Day (UTC): 2457841.404
Local Mean Sidereal Time: 12:27:09

Equation of Time: -4.3 min

Moon Illumination:0.01
Albedo Topographic
Moon Phase


Given the date, local time and Geodetic longitude, this web tool present the following information:
  • Julian day
  • Local mean sidereal time (which is the Right Ascension at the local meridian)
  • Equation of time (which is the difference between the mean Sun and real Sun)
  • Moon illumination
  • Earth Day/Night/ Twillight map