20,000-Year Lunar Phase Calculator
BC 9999 to AD 9999
PHP Program by Jay Tanner - 2026 - Built Around The NASA/JPL Horizons API
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Download This Program + Phase Images (Approx. 13.2 MB)
N
Phase Angle: 113.9736°
Waxing gibbous, just past first quarter.
Distance: 399,795.8 km = 248,421.6 mi
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====================================================== TOPOCENTRIC LUNAR PHASE CALCULATOR FOR ANY GIVEN DATE, TIME AND LOCATION Calendar Date/Time AD 2026-Sep-20 21:28:45 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 2026-Sep-20 15:22 126.15° SE Rise AD 2026-Sep-20 19:44 On Merid | Transit 21.44° ###################################################### MOON TOPOCENTRIC EPHEMERIS STATISTICS Calendar Date AD 2026-Sep-20 Local Time 21:28:45 Standard Time Local Time Zone UT-05:00 NOTE: Time Zone is ignored if using the TT time Scale Julian Date 2461304.603298611 UT Right Ascension 19h 38m 40.617s 19.644615723933 h 294° 40' 09.249" 294.669235859° Declination -25° 24' 58.761" -25.416322434° Distance 399,795.8 km 248,421.6 mi 0.00267246983621 AU Angular Diameter 0° 29' 52.743" 1792.743" 0.4979841667° Visual Magnitude -10.836 Horizon Azimuth 204.23° Direction: SSW Horizon Elevation +17.71° Above Local Horizon Lunar Phase Angle 113.9736° Waxing gibbous, just past first quarter. 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 +01h 42m 34.954s +1.709709555 h +25° 38' 44.316" +25.645643325° Loc Sidereal Time 21h 21m 15.571s 21.3543252788 h 320° 18' 53.565" 320.314879182° Radial Velocity +0.0973365 km/s +350.4114 km/h +0.0604821 mi/s +217.7355494 mi/h Receding From Observer Delta T (TDB−UT) +69.182422 sec +0d 00h 01m 09.182422s ######################################################