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: 186.7996°
Full Moon.
Distance: 406,368.7 km = 252,505.8 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-Mar-14 15:15:09 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-Mar-14 00:15 On Merid | Transit 49.62° AD 2025-Mar-14 06:29 271.94° W Set AD 2025-Mar-14 18:52 92.34° E Rise ###################################################### MOON TOPOCENTRIC EPHEMERIS STATISTICS Calendar Date AD 2025-Mar-14 Local Time 15:15:09 Standard Time Local Time Zone UT-05:00 NOTE: Time Zone is ignored if using the TT time Scale Julian Date 2460749.343854167 UT Right Ascension 12h 02m 03.728s 12.034368776533 h 180° 30' 55.914" 180.515531648° Declination -0° 35' 59.410" -0.599836074° Distance 406,368.7 km 252,505.8 mi 0.00271640698746 AU Angular Diameter 0° 29' 23.746" 1763.746" 0.4899294444° Visual Magnitude -12.430 Horizon Azimuth 50.47° Direction: NE Horizon Elevation -35.13° Below Local Horizon Lunar Phase Angle 186.7996° Full Moon. 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 -09h 23m 34.178s -9.392827091 h -140° 53' 32.663" -140.892406365° Loc Sidereal Time 02h 38m 29.550s 2.6415416856 h 39° 37' 23.251" 39.623125284° Radial Velocity -0.179529 km/s -646.3044 km/h -0.1115541 mi/s -401.5949356 mi/h Approaching Observer Delta T (TDB−UT) +69.185536 sec +0d 00h 01m 09.185536s ######################################################