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 1920· three 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 10 Mar – 02 Apr (3 weeks), 4°41' Aries back to 21°39' Pisces; shadow from 25 Feb to 22 Apr. Stations at 20:56 and 22:39 UT.
Retrograde 13 Jul – 06 Aug (3 weeks), 10°18' Leo back to 29°14' Cancer; shadow from 25 Jun to 20 Aug. Stations at 14:01 and 17:42 UT.
Retrograde 05 Nov – 25 Nov (3 weeks), 2°12' Sagittarius back to 16°05' Scorpio; shadow from 17 Oct to 12 Dec. Stations at 12:43 and 12:51 UT.
♀︎Venus retrograde 1920· not retrograde this year
Venus holds a straight course through 1920; no spell, no shadow, no station to mark.
♂︎Mars retrograde 1920· once this year
Retrograde 15 Mar – 31 May (11 weeks), 9°05' Scorpio back to 21°14' Libra; shadow from 10 Jan to 30 Jul. Stations at 03:02 and 22:21 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 1920· once this year
Retrograde 05 Dec 1919 – 04 Apr (17 weeks), 18°08' Leo back to 8°06' Leo; shadow from 09 Sep 1919 to 01 Jul. Stations at 09:33 and 01:40 UT.
♄︎Saturn retrograde 1920· once this year
Retrograde 23 Dec 1919 – 06 May (19 weeks), 11°40' Virgo back to 4°48' Virgo; shadow from 19 Sep 1919 to 12 Aug. Stations at 08:12 and 23:55 UT.
♅︎Uranus retrograde 1920· once this year
Retrograde 10 Jun – 11 Nov (22 weeks), 5°40' Pisces back to 1°44' Pisces; shadow from 23 Feb to 25 Feb 1921. Stations at 04:04 and 07:17 UT.
♆︎Neptune retrograde 1920· twice this year
Retrograde 14 Nov 1919 – 19 Apr (22 weeks), 11°32' Leo back to 8°44' Leo; shadow from 25 Jul 1919 to 11 Aug. Stations at 22:15 and 13:55 UT.
Retrograde 16 Nov – 22 Apr 1921 (22 weeks), 13°45' Leo back to 10°57' Leo; shadow from 26 Jul to 13 Aug 1921. Stations at 08:53 and 02:36 UT.
♇︎Pluto retrograde 1920· twice this year
Retrograde 09 Oct 1919 – 20 Mar (23 weeks), 7°46' Cancer back to 5°40' Cancer; shadow from 09 Jun 1919 to 19 Jul. Stations at 03:57 and 02:55 UT.
Retrograde 09 Oct – 21 Mar 1921 (23 weeks), 8°55' Cancer back to 6°48' Cancer; shadow from 09 Jun to 20 Jul 1921. Stations at 14:31 and 10:02 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.