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 2023 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 2023 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 ================ =============== ======== ==================================== 2459947.34466114 2023 Jan 02 Mon 08:16 PM Mercury perihelion at 0.307539 AU 2459949.17882305 2023 Jan 04 Wed 04:18 PM Earth perihelion at 0.983295577 AU 2459951.46377894 2023 Jan 06 Fri 11:08 PM Full Moon 2459952.85734269 2023 Jan 08 Sun 08:35 AM Mercury perigee at 0.670440215 AU 2459952.88844700 2023 Jan 08 Sun 09:19 AM Lunar apogee at 406458.329 km 2459959.59045933 2023 Jan 15 Sun 02:10 AM Last Quarter Moon 2459964.98524719 2023 Jan 20 Fri 11:39 AM Jupiter perihelion at 4.951011 AU 2459965.64094616 2023 Jan 21 Sat 03:23 AM Pluto apogee at 35.673196317 AU 2459966.37027184 2023 Jan 21 Sat 08:53 PM New Moon 2459966.37288607 2023 Jan 21 Sat 08:57 PM Lunar perigee at 356568.950 km 2459973.13799421 2023 Jan 28 Sat 03:19 PM First Quarter Moon Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2459979.87120474 2023 Feb 04 Sat 08:55 AM Lunar apogee at 406476.195 km 2459981.26979314 2023 Feb 05 Sun 06:29 PM Full Moon 2459989.16713106 2023 Feb 13 Mon 04:01 PM Last Quarter Moon 2459991.32936604 2023 Feb 15 Wed 07:54 PM Mercury aphelion at 0.466682 AU 2459992.00556007 2023 Feb 16 Thu 12:08 PM Saturn apogee at 10.811415858 AU 2459994.87892142 2023 Feb 19 Sun 09:06 AM Lunar perigee at 358266.998 km 2459995.79567953 2023 Feb 20 Mon 07:06 AM New Moon 2460002.83719638 2023 Feb 27 Mon 08:06 AM First Quarter Moon Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460007.25013053 2023 Mar 03 Fri 06:00 PM Lunar apogee at 405888.543 km 2460011.02798616 2023 Mar 07 Tue 12:40 PM Full Moon 2460014.55032743 2023 Mar 11 Sat 01:12 AM Mercury apogee at 1.369284429 AU 2460018.58904123 2023 Mar 15 Wed 02:08 AM Last Quarter Moon 2460020.37868025 2023 Mar 16 Thu 09:05 PM Neptune apogee at 30.905268008 AU 2460023.13367914 2023 Mar 19 Sun 03:13 PM Lunar perigee at 362696.477 km 2460024.39229331 2023 Mar 20 Mon 09:25 PM March Equinox 2460025.22436176 2023 Mar 21 Tue 05:23 PM New Moon 2460032.60576999 2023 Mar 29 Wed 02:32 AM First Quarter Moon 2460034.97016374 2023 Mar 31 Fri 11:17 AM Lunar apogee at 404918.965 km 2460035.31385761 2023 Mar 31 Fri 07:32 PM Mercury perihelion at 0.307531 AU Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460040.69059813 2023 Apr 06 Thu 04:34 AM Full Moon 2460047.88287484 2023 Apr 13 Thu 09:11 AM Last Quarter Moon 2460048.10982646 2023 Apr 13 Thu 02:38 PM Jupiter apogee at 5.955136006 AU 2460050.59998706 2023 Apr 16 Sun 02:24 AM Lunar perigee at 367968.167 km 2460052.06496621 2023 Apr 17 Mon 01:34 PM Venus perihelion at 0.718442 AU 2460054.67532601 2023 Apr 20 Thu 04:12 AM New Moon 2460054.67827546 2023 Apr 20 Thu 04:17 AM Hibrid SOLAR ECLIPSE 01m 16s 2460062.38879888 2023 Apr 27 Thu 09:20 PM First Quarter Moon 2460062.77985439 2023 Apr 28 Fri 06:43 AM Lunar apogee at 404299.110 km Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460069.08077816 2023 May 04 Thu 01:56 PM Mercury perigee at 0.559300894 AU 2460070.22420139 2023 May 05 Fri 05:23 PM Penumbral LUNAR ECLIPSE Midpoint 2460070.23192655 2023 May 05 Fri 05:34 PM Full Moon 2460074.65321368 2023 May 10 Wed 03:41 AM Uranus apogee at 20.659843783 AU 2460075.71183754 2023 May 11 Thu 05:05 AM Lunar perigee at 369343.142 km 2460077.10292727 2023 May 12 Fri 02:28 PM Last Quarter Moon 2460079.29850575 2023 May 14 Sun 07:10 PM Mercury aphelion at 0.466686 AU 2460084.16194183 2023 May 19 Fri 03:53 PM New Moon 2460090.56866224 2023 May 26 Fri 01:39 AM Lunar apogee at 404508.928 km 2460092.14042477 2023 May 27 Sat 03:22 PM First Quarter Moon 2460095.35551225 2023 May 30 Tue 08:32 PM Mars aphelion at 1.665939 AU Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460099.65392803 2023 Jun 04 Sun 03:42 AM Full Moon 2460102.46234687 2023 Jun 06 Tue 11:06 PM Lunar perigee at 364861.341 km 2460106.31340624 2023 Jun 10 Sat 07:31 PM Last Quarter Moon 2460113.69241130 2023 Jun 18 Sun 04:37 AM New Moon 2460117.12343303 2023 Jun 21 Wed 02:58 PM June Solstice 2460118.27115828 2023 Jun 22 Thu 06:30 PM Lunar apogee at 405385.167 km 2460121.82614372 2023 Jun 26 Mon 07:50 AM First Quarter Moon 2460123.28281937 2023 Jun 27 Tue 06:47 PM Mercury perihelion at 0.307523 AU Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460128.12362338 2023 Jul 02 Sun 02:58 PM Mercury apogee at 1.328143437 AU 2460128.98514943 2023 Jul 03 Mon 11:39 AM Full Moon 2460130.43397594 2023 Jul 04 Tue 10:25 PM Lunar perigee at 360148.877 km 2460132.33781715 2023 Jul 06 Thu 08:06 PM Earth aphelion at 1.016680584 AU 2460135.57487028 2023 Jul 10 Mon 01:48 AM Last Quarter Moon 2460143.27205287 2023 Jul 17 Mon 06:32 PM New Moon 2460145.07142392 2023 Jul 19 Wed 01:43 PM Pluto perigee at 33.797057605 AU 2460145.78946845 2023 Jul 20 Thu 06:57 AM Lunar apogee at 406288.896 km 2460151.42133297 2023 Jul 25 Tue 10:07 PM First Quarter Moon Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460158.27193905 2023 Aug 01 Tue 06:32 PM Full Moon 2460158.74446369 2023 Aug 02 Wed 05:52 AM Lunar perigee at 357310.536 km 2460164.49746033 2023 Aug 07 Mon 11:56 PM Venus aphelion at 0.728224 AU 2460164.93635865 2023 Aug 08 Tue 10:28 AM Last Quarter Moon 2460167.26733066 2023 Aug 10 Thu 06:25 PM Mercury aphelion at 0.466689 AU 2460170.13236481 2023 Aug 13 Sun 03:11 PM Venus perigee at 0.288713824 AU 2460172.90146346 2023 Aug 16 Wed 09:38 AM New Moon 2460172.99601375 2023 Aug 16 Wed 11:54 AM Lunar apogee at 406634.479 km 2460180.91470640 2023 Aug 24 Thu 09:57 AM First Quarter Moon 2460183.99484060 2023 Aug 27 Sun 11:53 AM Saturn perigee at 8.762996093 AU 2460187.16265887 2023 Aug 30 Wed 03:54 PM Lunar perigee at 357180.754 km 2460187.56635572 2023 Aug 31 Thu 01:36 AM Full Moon Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460191.12839431 2023 Sep 03 Sun 03:05 PM Mercury perigee at 0.627936999 AU 2460194.43125987 2023 Sep 06 Wed 10:21 PM Last Quarter Moon 2460200.15456266 2023 Sep 12 Tue 03:43 PM Lunar apogee at 406290.776 km 2460202.56925814 2023 Sep 15 Fri 01:40 AM New Moon 2460206.11005478 2023 Sep 18 Mon 02:38 PM Neptune perigee at 28.901819347 AU 2460210.31369319 2023 Sep 22 Fri 07:32 PM First Quarter Moon 2460210.78457226 2023 Sep 23 Sat 06:50 AM September Equinox 2460211.25168146 2023 Sep 23 Sat 06:02 PM Mercury perihelion at 0.307520 AU 2460215.54086068 2023 Sep 28 Thu 12:59 AM Lunar perigee at 359911.362 km 2460216.91490638 2023 Sep 29 Fri 09:57 AM Full Moon Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460224.07475265 2023 Oct 06 Fri 01:48 PM Last Quarter Moon 2460227.65377207 2023 Oct 10 Tue 03:41 AM Lunar apogee at 405425.482 km 2460232.24657882 2023 Oct 14 Sat 05:55 PM New Moon 2460232.24961806 2023 Oct 14 Sat 05:59 PM Annular SOLAR ECLIPSE 05m 17s 2460235.89445663 2023 Oct 18 Wed 09:28 AM Mars apogee at 2.549742702 AU 2460239.64539536 2023 Oct 22 Sun 03:29 AM First Quarter Moon 2460243.62639007 2023 Oct 26 Thu 03:02 AM Lunar perigee at 364872.118 km 2460244.54393555 2023 Oct 27 Fri 01:03 AM Mercury apogee at 1.435252741 AU 2460246.34310185 2023 Oct 28 Sat 08:14 PM Partial LUNAR ECLIPSE Midpoint 2460246.34997708 2023 Oct 28 Sat 08:24 PM Full Moon Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460250.37768081 2023 Nov 01 Wed 09:04 PM Jupiter perigee at 3.982372495 AU 2460253.85884271 2023 Nov 05 Sun 08:37 AM Last Quarter Moon 2460255.23670792 2023 Nov 06 Mon 05:41 PM Mercury aphelion at 0.466623 AU 2460255.40887485 2023 Nov 06 Mon 09:49 PM Lunar apogee at 404569.029 km 2460261.89397441 2023 Nov 13 Mon 09:27 AM New Moon 2460261.98994302 2023 Nov 13 Mon 11:46 AM Uranus perigee at 18.631466581 AU 2460268.95125961 2023 Nov 20 Mon 10:50 AM First Quarter Moon 2460270.37607569 2023 Nov 21 Tue 09:02 PM Lunar perigee at 369818.429 km 2460275.88627072 2023 Nov 27 Mon 09:16 AM Full Moon 2460277.02116425 2023 Nov 28 Tue 12:30 PM Venus perihelion at 0.718449 AU Julian_Date_UT Calendar_Date Time_UT Solar_System_Event ================ =============== ======== ==================================== 2460283.27922101 2023 Dec 04 Mon 06:42 PM Lunar apogee at 404346.193 km 2460283.74249119 2023 Dec 05 Tue 05:49 AM Last Quarter Moon 2460291.48052456 2023 Dec 12 Tue 11:32 PM New Moon 2460295.28628681 2023 Dec 16 Sat 06:52 PM Lunar perigee at 367901.224 km 2460298.27719274 2023 Dec 19 Tue 06:39 PM First Quarter Moon 2460299.22143800 2023 Dec 20 Wed 05:19 PM Mercury perihelion at 0.307667 AU 2460300.64395161 2023 Dec 22 Fri 03:27 AM December Solstice 2460301.59879643 2023 Dec 23 Sat 02:22 AM Mercury perigee at 0.676182589 AU
============================================================================== BASIC SOLAR SYSTEM EVENTS CALCULATOR Program by: Jay Tanner - 2023 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