Retrograde Calendar
About Retrograde Calendar
Station times, degrees, durations, and shadow periods for every retrograde of the year — computed astronomy, not folklore.
No planet ever backs up; the loop is a trick of parallax as Earth laps a slower world or is lapped by a faster one. The tradition reads it accordingly. A changes a planet's gear, not its meaning; matters under its sponsorship come round again for review, revision, repair. The days that carry real weight are the , when a planet stands still to turn. Mark those dates, not the whole stretch.
☿︎Mercury retrograde 1820· four times this year
The classic season of crossed wires; three or four short spells a year. Re-read, re-confirm, back up the files; let the signature wait for the turning day if it can.
Retrograde 13 Dec 1819 – 02 Jan (3 weeks), 8°23' Capricorn back to 22°05' Sagittarius; shadow from 26 Nov 1819 to 21 Jan. Stations at 20:06 and 17:22 UT.
Retrograde 02 Apr – 26 Apr (3 weeks), 27°33' Aries back to 16°37' Aries; shadow from 20 Mar to 14 May. Stations at 20:26 and 12:41 UT.
Retrograde 06 Aug – 29 Aug (3 weeks), 4°24' Virgo back to 21°28' Leo; shadow from 17 Jul to 12 Sep. Stations at 01:26 and 15:06 UT.
Retrograde 26 Nov – 16 Dec (3 weeks), 22°34' Sagittarius back to 6°16' Sagittarius; shadow from 08 Nov to 03 Jan 1821. Stations at 16:07 and 10:28 UT.
♀︎Venus retrograde 1820· once this year
Retrograde 09 Jul – 21 Aug (6 weeks), 15°28' Leo back to 29°02' Cancer; shadow from 05 Jun to 23 Sep. Stations at 05:42 and 08:04 UT.
♂︎Mars retrograde 1820· once this year
Retrograde 07 Dec 1819 – 25 Feb (11 weeks), 5°43' Leo back to 16°29' Cancer; shadow from 05 Oct 1819 to 02 May. Stations at 19:38 and 00:55 UT.
The slow planets
Jupiter outward, a planet spends four to five months of every year retrograde; that is ordinary weather, not an event. The slower the planet, the longer the spell and the less it asks of any single day. Mark the stations; the rest is season.
♃︎Jupiter retrograde 1820· once this year
Retrograde 13 Jul – 08 Nov (17 weeks), 23°17' Pisces back to 13°23' Pisces; shadow from 19 Apr to 29 Jan 1821. Stations at 01:26 and 13:25 UT.
♄︎Saturn retrograde 1820· once this year
Retrograde 25 Jul – 09 Dec (20 weeks), 13°34' Aries back to 6°45' Aries; shadow from 19 Apr to 14 Mar 1821. Stations at 19:37 and 20:07 UT.
♅︎Uranus retrograde 1820· once this year
Retrograde 02 Apr – 03 Sep (22 weeks), 28°50' Sagittarius back to 24°50' Sagittarius; shadow from 19 Dec 1819 to 18 Dec. Stations at 22:12 and 11:41 UT.
♆︎Neptune retrograde 1820· once this year
Retrograde 02 Apr – 09 Sep (23 weeks), 0°52' Capricorn back to 28°06' Sagittarius; shadow from 13 Dec 1819 to 30 Dec. Stations at 09:38 and 16:36 UT.
♇︎Pluto retrograde 1820· once this year
Retrograde 28 Jun – 10 Dec (24 weeks), 28°44' Pisces back to 26°38' Pisces; shadow from 28 Feb to 09 Apr 1821. Stations at 22:31 and 20:47 UT.
All times Universal Time (UT), from the same engine as the sky. Spells that open or close beyond the calendar year are listed with their own year on the date; the window belongs to both years and appears on both pages. On doctrine: a retrograde conditions a planet's expression; it does not doom it. The working tradition keeps no list of forbidden days, a spell that repeats a is one process rather than three misfortunes, and the shadow is context, not an extension of the sentence. The stations are the moments that matter; what a planet touches while standing still, it means.