20,000-Year Moon Phase Calculator for Any Date, Time and Location
BC 9999-Mar-22-Fri to AD 9999-Dec-29-Wed
PHP Program by Jay Tanner - 2025 - Built Around The NASA/JPL Horizons API
Optional Location Name
Geographic GPS Coordinates
Longitude
Latitude
Altitude
m
Time Zone ?
Time Scale ?
Daylight / Summer Time ?
Date and Time
N
Phase Angle: 65.4170°
Waxing crescent.
Distance: 373,157.7 km = 231,869.4 mi
View Source Code
Download This Program + Phase Images (Approx. 15 MB)
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====================================================== TOPOCENTRIC MOON PHASE CALCULATOR FOR ANY GIVEN DATE, TIME AND LOCATION Calendar Date/Time AD 2025-Jan-04 23:15:09 Time Scale: UT Time Zone UT-05:00 (Ignored if TT Scale) Standard Time Location Name Central New York State, USA Longitude = -76.862737° Latitude = +42.904788° Altitude = +150 m Reference Frame ICRF International Celestial Reference Frame Mean refraction is applied to rise/set computations. ###################################################### MOON RISE / TRANSIT / SET TIMES Standard Time Local Date and Time Azim Dir Event Elev -------------------- -------- --- ------- ------ AD 2025-Jan-04 10:44 100.78° E Rise AD 2025-Jan-04 16:24 On Merid | Transit 40.34° AD 2025-Jan-04 22:17 263.68° W Set ###################################################### MOON TOPOCENTRIC EPHEMERIS STATISTICS Calendar Date AD 2025-Jan-04 Local Time 23:15:09 Standard Time Local Time Zone UT-05:00 NOTE: Time Zone is ignored if using the TT time Scale Julian Date 2460680.677187500 UT Right Ascension 23h 28m 41.438s 23.478177316867 h 352° 10' 21.575" 352.172659753° Declination -4° 21' 26.740" -4.357427681° Distance 373,157.7 km 231,869.4 mi 0.00249440513000 AU Angular Diameter 0° 32' 00.720" 1920.720" 0.5335333333° Visual Magnitude -9.162 Horizon Azimuth 273.47° Direction: W Horizon Elevation -10.12° Below Local Horizon Lunar Phase Angle 65.4170° Waxing crescent. Where: 0° = New Moon 45 = Waxing Crescent 90 = First Quarter 135 = Waxing Gibbous 180 = Full Moon 225 = Waning Gibbous 270 = Last Quarter 315 = Waning Crescent 360 = New Moon ###################################################### Local Hour Angle +06h 39m 04.593s +6.65127594 h +99° 46' 08.901" +99.7691391° Loc Sidereal Time 06h 07m 46.032s 6.1294532565 h 91° 56' 30.476" 91.9417988475° Radial Velocity +0.3027985 km/s +1090.0746 km/h +0.1881503 mi/s +677.3409538 mi/h Receding From Observer Delta T (TDB−UT) +69.184039 sec +0d 00h 01m 09.184039s ######################################################