Astronomical Almanac

Blaine F. Roelke Memorial Observatory
39.6474°N, 76.9873°W

Time Display

Local Time
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UTC (Coordinated Universal Time)
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LAST (Local Apparent Sidereal Time)
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Sunrise, Sunset & Twilight

Current Moon Phase

Moon Image Credit: NASA
Date
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Moon Phase
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Illumination
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Planetary Positions

RA (J2000) Dec (J2000) Altitude Azimuth Rise Transit Set
Note: Positions are calculated using the low precision algorithm described in Chapter 8 of the Explanatory Supplement to the Astronomical Almanac. See Keperian Elements for Approximate Positions of the Major Planets at JPL Solar System Dynamics for a general overview.

The positions should be accurate enough for most purposes but since it only has elements for Earth-Moon barycenter, there is some parallax error and apparent positions will differ slightly from that of a topocentric observer.