Solar System Events Synopsis Calculator Based on the 600-Year DE405 Ephemeris From  1600  to  2200 PHP Program by Jay Tanner
Calendar Year (1600  to  2200)	Local Time Zone Offset From UT Neg | Pos  =  West | East UT
============================================================================== SOLAR SYSTEM EVENTS DATES AND TIMES SYNOPSIS FOR THE YEAR 2025 For The Time Scales: LT = Local Time for the Given Time Zone UT = Universal Time ============================================================================== ============================================================================== SOLAR SYSTEM EVENTS DATES AND TIMES SYNOPSIS FOR THE YEAR 2025 LT (LOCAL TIME) FOR LOCAL TIME ZONE UT+00:00 (LT = UT when TZ = UT ± 00:00) Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460680.06107089 2025 Jan 04 Sat 01:28 PM Earth perihelion at 0.983327408 AU 2460682.49737092 2025 Jan 06 Mon 11:56 PM First Quarter Moon 2460683.50086102 2025 Jan 08 Wed 12:01 AM Lunar perigee at 370170.691 km 2460688.06741396 2025 Jan 12 Sun 01:37 PM Mars perigee at 0.642282539 AU 2460689.43529796 2025 Jan 13 Mon 10:27 PM Full Moon 2460695.08372784 2025 Jan 19 Sun 02:01 PM Mercury aphelion at 0.466654 AU 2460696.70419825 2025 Jan 21 Tue 04:54 AM Lunar apogee at 404298.088 km 2460697.35466040 2025 Jan 21 Tue 08:31 PM Last Quarter Moon 2460699.66731809 2025 Jan 24 Fri 04:01 AM Pluto apogee at 36.168584311 AU 2460705.02493170 2025 Jan 29 Wed 12:36 PM New Moon Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460708.23411816 2025 Feb 01 Sat 05:37 PM Mercury apogee at 1.411721557 AU 2460708.61573026 2025 Feb 02 Sun 02:47 AM Lunar perigee at 367456.777 km 2460711.83476090 2025 Feb 05 Wed 08:02 AM First Quarter Moon 2460719.07868201 2025 Feb 12 Wed 01:53 PM Full Moon 2460724.54873560 2025 Feb 18 Tue 01:10 AM Lunar apogee at 404882.411 km 2460726.32840503 2025 Feb 19 Wed 07:53 PM Venus perihelion at 0.718454 AU 2460727.23086629 2025 Feb 20 Thu 05:32 PM Last Quarter Moon 2460734.53106143 2025 Feb 28 Fri 12:45 AM New Moon Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460736.38972554 2025 Mar 01 Sat 09:21 PM Lunar perigee at 361963.586 km 2460739.06865280 2025 Mar 04 Tue 01:39 PM Mercury perihelion at 0.307601 AU 2460741.18856379 2025 Mar 06 Thu 04:32 PM First Quarter Moon 2460746.78002104 2025 Mar 12 Wed 06:43 AM Saturn apogee at 10.602154208 AU 2460748.78788689 2025 Mar 14 Fri 06:55 AM Full Moon 2460748.79075231 2025 Mar 14 Fri 06:59 AM TOTAL LUNAR ECLIPSE Midpoint 2460752.19212522 2025 Mar 17 Mon 04:37 PM Lunar apogee at 405753.769 km 2460754.87644059 2025 Mar 20 Thu 09:02 AM March Equinox 2460755.38332901 2025 Mar 20 Thu 09:12 PM Neptune apogee at 30.887918679 AU 2460756.97871084 2025 Mar 22 Sat 11:29 AM Last Quarter Moon 2460757.15419156 2025 Mar 22 Sat 03:42 PM Venus perigee at 0.280600941 AU 2460762.71945388 2025 Mar 28 Fri 05:16 AM Mercury perigee at 0.596801618 AU 2460763.94954861 2025 Mar 29 Sat 10:47 AM Partial SOLAR ECLIPSE 2460763.95676086 2025 Mar 29 Sat 10:58 AM New Moon 2460764.72576324 2025 Mar 30 Sun 05:25 AM Lunar perigee at 358127.738 km Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460770.59346399 2025 Apr 05 Sat 02:15 AM First Quarter Moon 2460778.51539220 2025 Apr 13 Sun 12:22 AM Full Moon 2460779.45011483 2025 Apr 13 Sun 10:48 PM Lunar apogee at 406295.080 km 2460782.42531018 2025 Apr 16 Wed 10:12 PM Mars aphelion at 1.666062 AU 2460783.05359618 2025 Apr 17 Thu 01:17 PM Mercury aphelion at 0.466661 AU 2460786.56630116 2025 Apr 21 Mon 01:35 AM Last Quarter Moon 2460793.17898626 2025 Apr 27 Sun 04:18 PM Lunar perigee at 357118.540 km 2460793.31323497 2025 Apr 27 Sun 07:31 PM New Moon Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460800.07754411 2025 May 04 Sun 01:52 PM First Quarter Moon 2460806.53257154 2025 May 11 Sun 12:47 AM Lunar apogee at 406243.747 km 2460808.20544574 2025 May 12 Mon 04:56 PM Full Moon 2460813.63062461 2025 May 18 Sun 03:08 AM Uranus apogee at 20.541295643 AU 2460815.99907749 2025 May 20 Tue 11:59 AM Last Quarter Moon 2460821.56506857 2025 May 26 Mon 01:34 AM Lunar perigee at 359022.274 km 2460822.62656563 2025 May 27 Tue 03:02 AM New Moon 2460825.07760469 2025 May 29 Thu 01:52 PM Mercury apogee at 1.321815064 AU 2460827.03807495 2025 May 31 Sat 12:55 PM Mercury perihelion at 0.307584 AU Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460829.65338338 2025 Jun 03 Tue 03:41 AM First Quarter Moon 2460833.94693762 2025 Jun 07 Sat 10:44 AM Lunar apogee at 405553.481 km 2460837.82204308 2025 Jun 11 Wed 07:44 AM Full Moon 2460838.59733175 2025 Jun 12 Thu 02:20 AM Venus aphelion at 0.728232 AU 2460845.30487189 2025 Jun 18 Wed 07:19 PM Last Quarter Moon 2460847.61261153 2025 Jun 21 Sat 02:42 AM June Solstice 2460849.69733540 2025 Jun 23 Mon 04:44 AM Lunar perigee at 363178.151 km 2460851.93855658 2025 Jun 25 Wed 10:32 AM New Moon 2460853.17121717 2025 Jun 26 Thu 04:07 PM Jupiter apogee at 6.159626758 AU Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460859.31256538 2025 Jul 02 Wed 07:30 PM First Quarter Moon 2460860.32967544 2025 Jul 03 Thu 07:55 PM Earth aphelion at 1.016643732 AU 2460861.60322876 2025 Jul 05 Sat 02:29 AM Lunar apogee at 404626.589 km 2460867.35881759 2025 Jul 10 Thu 08:37 PM Full Moon 2460871.02243775 2025 Jul 14 Mon 12:32 PM Mercury aphelion at 0.466666 AU 2460874.52609117 2025 Jul 18 Fri 12:38 AM Last Quarter Moon 2460877.07977167 2025 Jul 20 Sun 01:55 PM Lunar perigee at 368041.368 km 2460879.09650062 2025 Jul 22 Tue 02:19 PM Pluto perigee at 34.296837900 AU 2460881.29937764 2025 Jul 24 Thu 07:11 PM New Moon 2460885.20789914 2025 Jul 28 Mon 04:59 PM Mercury perigee at 0.587646308 AU Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460889.02862862 2025 Aug 01 Fri 12:41 PM First Quarter Moon 2460889.35855428 2025 Aug 01 Fri 08:36 PM Lunar apogee at 404161.349 km 2460896.82984473 2025 Aug 09 Sat 07:55 AM Full Moon 2460902.24917498 2025 Aug 14 Thu 05:59 PM Lunar perigee at 369288.295 km 2460903.71676371 2025 Aug 16 Sat 05:12 AM Last Quarter Moon 2460910.75448177 2025 Aug 23 Sat 06:06 AM New Moon 2460915.00698541 2025 Aug 27 Wed 12:10 PM Mercury perihelion at 0.307574 AU 2460917.14828558 2025 Aug 29 Fri 03:34 PM Lunar apogee at 404547.780 km 2460918.76743230 2025 Aug 31 Sun 06:25 AM First Quarter Moon Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460926.25611183 2025 Sep 07 Sun 06:09 PM Full Moon 2460926.25813657 2025 Sep 07 Sun 06:12 PM TOTAL LUNAR ECLIPSE Midpoint 2460929.00653913 2025 Sep 10 Wed 12:09 PM Lunar perigee at 364777.367 km 2460932.93948462 2025 Sep 14 Sun 10:33 AM Last Quarter Moon 2460939.23864384 2025 Sep 20 Sat 05:44 PM Mercury apogee at 1.398670500 AU 2460939.83566936 2025 Sep 21 Sun 08:03 AM Saturn perigee at 8.546755785 AU 2460940.32070601 2025 Sep 21 Sun 07:42 PM Partial SOLAR ECLIPSE 2460940.32919028 2025 Sep 21 Sun 07:54 PM New Moon 2460941.17957095 2025 Sep 22 Mon 04:19 PM Neptune perigee at 28.884155060 AU 2460941.26323487 2025 Sep 22 Mon 06:19 PM September Equinox 2460944.90701950 2025 Sep 26 Fri 09:46 AM Lunar apogee at 405547.573 km 2460948.49564863 2025 Sep 29 Mon 11:54 PM First Quarter Moon Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460950.87155243 2025 Oct 02 Thu 08:55 AM Venus perihelion at 0.718423 AU 2460955.65799848 2025 Oct 07 Tue 03:48 AM Full Moon 2460957.02656854 2025 Oct 08 Wed 12:38 PM Lunar perigee at 359818.976 km 2460958.99131349 2025 Oct 10 Fri 11:47 AM Mercury aphelion at 0.466669 AU 2460962.25874762 2025 Oct 13 Mon 06:13 PM Last Quarter Moon 2460970.01741459 2025 Oct 21 Tue 12:25 PM New Moon 2460972.47948613 2025 Oct 23 Thu 11:30 PM Lunar apogee at 406444.429 km 2460978.18105759 2025 Oct 29 Wed 04:21 PM First Quarter Moon Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460985.05500735 2025 Nov 05 Wed 01:19 PM Full Moon 2460985.43548617 2025 Nov 05 Wed 10:27 PM Lunar perigee at 356832.735 km 2460991.72781094 2025 Nov 12 Wed 05:28 AM Last Quarter Moon 2460999.29797751 2025 Nov 19 Wed 07:09 PM Mercury perigee at 0.677156966 AU 2460999.61687435 2025 Nov 20 Thu 02:48 AM Lunar apogee at 406691.237 km 2460999.78275851 2025 Nov 20 Thu 06:47 AM New Moon 2461000.92906526 2025 Nov 21 Fri 10:18 AM Uranus perigee at 18.509374370 AU 2461002.97583141 2025 Nov 23 Sun 11:25 AM Mercury perihelion at 0.307566 AU 2461007.79076589 2025 Nov 28 Fri 06:59 AM First Quarter Moon 2461009.94461980 2025 Nov 30 Sun 10:40 AM Mars apogee at 2.423839783 AU Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2461013.96343387 2025 Dec 04 Thu 11:07 AM Lunar perigee at 356962.565 km 2461014.46804028 2025 Dec 04 Thu 11:14 PM Full Moon 2461021.36916165 2025 Dec 11 Thu 08:52 PM Last Quarter Moon 2461026.75619004 2025 Dec 17 Wed 06:09 AM Lunar apogee at 406322.218 km 2461029.57170101 2025 Dec 20 Sat 01:43 AM New Moon 2461031.12707224 2025 Dec 21 Sun 03:03 PM December Solstice
============================================================================== BASIC SOLAR SYSTEM EVENTS CALCULATOR Program by: Jay Tanner - 2025 This program computes the dates and times of the basic solar system events for any given year from 1600 to 2200 in any local time zone offset from UT. ------------------------------------------------------------------------------ THE BASIC SOLAR SYSTEM EVENTS SYNOPSIS INCLUDES THE DATES AND TIMES OF: Full moons, new moons and the quarter phases. Lunar perigees, apogees and distances. Partial and total lunar eclipses. Seasonal equinoxes and solstices. Earth perihelions, aphelions and distances. Partial and total solar eclipses. Planetary perigees and apogees. Planetary perihelions and aphelions. Solar transits of Mercury and Venus. ------------------------------------------------------------------------------ BASIS The positional computations, from which the dates and time were computed, are based on the NASA/JPL DE405 ephemeris and the IAU 2000B theory of nutation, referred to the true ecliptic, equator and equinox of the date. The dates and times of the solar and lunar eclipses and solar transits of the planets Mercury and Venus are based on the work of Fred Espenak, NASA GSFC Emeritus, and refer to the times of mid-event or a maximum point. Only the general times of the events are computed, not the finer details, since this program is only a general synopsis of basic events for the given year. The remote Delta T estimates are computed from the NASA polynomial expressions and resolved to the nearest second. The greatest uncertainty lies in the value of the Delta T, which can only be estimated for remote dates based on observed past trends and current observations. ============================================================================== BASIC SOLAR SYSTEM EVENTS Earth/Moon Event Event Description ------------------ ---------------------------------------------------------- New Moon Moon at phase angle 0/360 deg First Quarter Moon Moon at phase angle 90 deg Full Moon Moon at phase angle 180 deg Last Quarter Moon Moon at phase angle 270 deg Penumbral Eclipse Moon passes through faint outer shadow, barely apparent. Partial Eclipse Moon passes only partially through darker inner shadow. Total Eclipse Moon passes totally within the darker inner shadow. Lunar Perigee Moon at minimum orbital distance from Earth Lunar Apogee Moon at maximum orbital distance from Earth Perihelion Earth or planet at minimum orbital distance from Sun Aphelion Earth or planet at maximum orbital distance from Sun Planet Perigee Closest planetary approach to Earth. There could be more than one perigee in a year, depending on the planet. Each year, every planet has at least one perigee point of closest approach. Planetary Apogee Greatest planetary distance from Earth. There could be more than one apogee in a year, depending on the planet. March Equinox Beginning of Northern Spring and Southern Autumn June Solstice Beginning of Northern Summer and Southern Winter September Equinox Beginning of Northern Autumn and Southern Spring December Solstice Beginning of Northern Winter and Southern Summer Mercury Transit Planet Mercury slowly passes across the face of the sun. Venus Transit Planet Venus slowly passes across the face of the sun. ============================================================================== BASIC TIME-RELATED SYMBOLS AND RELATIONSHIPS LT = Local Time in Time Zone TZ TZ = Local Time Zone Offset From UT (±00:00 = UT) (Neg|Pos = West|East) UT = Universal Time DT = Delta T correction estimate computed from NASA polynomial expressions TT = Terrestrial (Dynamical) Time UT = LT − (TZ) TT = UT + (DT) = Astronomical time scale used internally for the computations. or TT = LT − (TZ) + DT The given LT (Local Time) is converted into TT and the TT value is used as the actual time variable for the computations. ============================================================================== REFERENCES: NASA/JPL DEVELOPMENT (DExxx) EPHEMERIS MODELS https://en.wikipedia.org/wiki/Jet_Propulsion_Laboratory_Development_Ephemeris ftp://ssd.jpl.nasa.gov/pub/eph/planets/README.txt ECLIPSES https://eclipse.gsfc.nasa.gov/lunar.html https://eclipse.gsfc.nasa.gov/solar.html MERCURY and VENUS SOLAR TRANSITS https://eclipse.gsfc.nasa.gov/transit/transit.html https://eclipse.gsfc.nasa.gov/transit/catalog/MercuryCatalog.html https://eclipse.gsfc.nasa.gov/transit/catalog/VenusCatalog.html DELTA T ESTIMATION https://eclipse.gsfc.nasa.gov/SEcat5/deltatpoly.html https://eclipse.gsfc.nasa.gov/SEhelp/deltaT.html https://eclipse.gsfc.nasa.gov/SEcat5/deltat.html ==============================================================================
Program by Jay Tanner Thursday, January 01, 1970 at 12:00 AM UTC