2027 Forecast

Mars retrograde 1921

There was no Mars retrograde in 1921: the planet stayed direct all year — the previous retrograde ended on May 31, 1920 in Libra, and the next began on May 8, 1922 in Sagittarius.

Retrograde in 1921
None direct all year
Previous direct station
May 31, 1920 10:26 PM UTC
Next retrograde station
May 8, 1922 6:10 AM UTC
Gap between loops
706 days
Mars Retrograde 1921: None — Next Starts May 8, 1922

Mars’s path through 1921, day by day

Apparent position of Mars against the zodiac, 1921
Apparent position of Mars against the zodiac, 1921. Mars starts 1921 at 25°32′ Aquarius and ends it at 2°07′ Scorpio — 246.6° of net progress, all of it forward. Fastest day: Jan 1, 0.78° forward. AquariusPiscesAriesTaurusGeminiCancerLeoVirgoLibraScorpioJanFebMarAprMayJunJulAugSepOctNovDecSource: JPL orbital elements; stations NASA JPL DE440astrohot.com Apparent position of Mars against the zodiac, 1921. Mars starts 1921 at 25°32′ Aquarius and ends it at 2°07′ Scorpio — 246.6° of net progress, all of it forward. Fastest day: Jan 1, 0.78° forward. AquariusPiscesAriesTaurusGeminiCancerLeoVirgoLibraScorpioJanFebMarAprMayJunJulAugSepOctNovDecSource: JPL orbital elements; stations NASA JPL DE440astrohot.com
Retrograde Shadow R — stations retrograde · D — stations direct

Mars starts 1921 at 25°32′ Aquarius and ends it at 2°07′ Scorpio — 246.6° of net progress, all of it forward. Fastest day: Jan 1, 0.78° forward.

Exact times

The Mars stations either side of 1921: exact times in your city

Mars turned retrograde at 6:10 AM UTC on May 8, 1922 at 25°16′ Sagittarius — 1:27 AM in Santiago, 2:10 AM in New York, 7:10 AM in London and 3:10 PM in Tokyo.

City Turns direct · May 31, 1920 Turns retrograde · May 8, 1922
UTC Mon, May 31, 1920 · 21°14′ Libra Mon, May 8, 1922 · 25°16′ Sagittarius
Honolulu United States 11:56 AM Mon, May 31, 1920 · UTC−10:30 7:40 PM Sun, May 7, 1922 · UTC−10:30
Anchorage United States 12:26 PM Mon, May 31, 1920 · UTC−10 8:10 PM Sun, May 7, 1922 · UTC−10
Los Angeles United States 2:26 PM Mon, May 31, 1920 · UTC−8 10:10 PM Sun, May 7, 1922 · UTC−8
Phoenix United States 3:26 PM Mon, May 31, 1920 · UTC−7 11:10 PM Sun, May 7, 1922 · UTC−7
Denver United States 4:26 PM Mon, May 31, 1920 · UTC−6 11:10 PM Sun, May 7, 1922 · UTC−7
Chicago United States 4:26 PM Mon, May 31, 1920 · UTC−6 1:10 AM Mon, May 8, 1922 · UTC−5
Mexico City Mexico 3:49 PM Mon, May 31, 1920 · UTC−6:36 11:10 PM Sun, May 7, 1922 · UTC−7
New York United States 6:26 PM Mon, May 31, 1920 · UTC−4 2:10 AM Mon, May 8, 1922 · UTC−4
Toronto Canada 6:26 PM Mon, May 31, 1920 · UTC−4 1:10 AM Mon, May 8, 1922 · UTC−5
Bogotá Colombia 5:26 PM Mon, May 31, 1920 · UTC−5 1:10 AM Mon, May 8, 1922 · UTC−5
Lima Peru 5:26 PM Mon, May 31, 1920 · UTC−5 1:10 AM Mon, May 8, 1922 · UTC−5
Caracas Venezuela 5:56 PM Mon, May 31, 1920 · UTC−4:30 1:40 AM Mon, May 8, 1922 · UTC−4:30
Santiago Chile 5:43 PM Mon, May 31, 1920 · UTC−4:42 1:27 AM Mon, May 8, 1922 · UTC−4:42
Buenos Aires Argentina 6:26 PM Mon, May 31, 1920 · UTC−4 2:10 AM Mon, May 8, 1922 · UTC−4
São Paulo Brazil 7:26 PM Mon, May 31, 1920 · UTC−3 3:10 AM Mon, May 8, 1922 · UTC−3
Reykjavík Iceland 9:26 PM Mon, May 31, 1920 · UTC−1 5:10 AM Mon, May 8, 1922 · UTC−1
London United Kingdom 11:26 PM Mon, May 31, 1920 · UTC+1 7:10 AM Mon, May 8, 1922 · UTC+1
Lagos Nigeria 11:26 PM Mon, May 31, 1920 · UTC+1 7:10 AM Mon, May 8, 1922 · UTC+1
Paris France 11:26 PM Mon, May 31, 1920 · UTC+1 7:10 AM Mon, May 8, 1922 · UTC+1
Berlin Germany 11:26 PM Mon, May 31, 1920 · UTC+1 7:10 AM Mon, May 8, 1922 · UTC+1
Johannesburg South Africa 12:26 AM Tue, Jun 1, 1920 · UTC+2 8:10 AM Mon, May 8, 1922 · UTC+2
Cairo Egypt 12:26 AM Tue, Jun 1, 1920 · UTC+2 8:10 AM Mon, May 8, 1922 · UTC+2
Athens Greece 12:26 AM Tue, Jun 1, 1920 · UTC+2 8:10 AM Mon, May 8, 1922 · UTC+2
Istanbul Turkey 1:26 AM Tue, Jun 1, 1920 · UTC+3 9:10 AM Mon, May 8, 1922 · UTC+3
Moscow Russia 1:26 AM Tue, Jun 1, 1920 · UTC+3 9:10 AM Mon, May 8, 1922 · UTC+3
Nairobi Kenya 12:56 AM Tue, Jun 1, 1920 · UTC+2:30 8:40 AM Mon, May 8, 1922 · UTC+2:30
Tehran Iran 1:51 AM Tue, Jun 1, 1920 · UTC+3:25 9:35 AM Mon, May 8, 1922 · UTC+3:25
Dubai United Arab Emirates 2:26 AM Tue, Jun 1, 1920 · UTC+4 10:10 AM Mon, May 8, 1922 · UTC+4
Karachi Pakistan 3:56 AM Tue, Jun 1, 1920 · UTC+5:30 11:40 AM Mon, May 8, 1922 · UTC+5:30
New Delhi India 3:56 AM Tue, Jun 1, 1920 · UTC+5:30 11:40 AM Mon, May 8, 1922 · UTC+5:30
Kathmandu Nepal 3:56 AM Tue, Jun 1, 1920 · UTC+5:30 11:40 AM Mon, May 8, 1922 · UTC+5:30
Dhaka Bangladesh 4:19 AM Tue, Jun 1, 1920 · UTC+5:53 12:03 PM Mon, May 8, 1922 · UTC+5:53
Bangkok Thailand 5:26 AM Tue, Jun 1, 1920 · UTC+7 1:10 PM Mon, May 8, 1922 · UTC+7
Jakarta Indonesia 5:33 AM Tue, Jun 1, 1920 · UTC+7:07 1:17 PM Mon, May 8, 1922 · UTC+7:07
Singapore 5:26 AM Tue, Jun 1, 1920 · UTC+7 1:10 PM Mon, May 8, 1922 · UTC+7
Beijing China 6:26 AM Tue, Jun 1, 1920 · UTC+8 2:10 PM Mon, May 8, 1922 · UTC+8
Manila Philippines 6:26 AM Tue, Jun 1, 1920 · UTC+8 2:10 PM Mon, May 8, 1922 · UTC+8
Perth Australia 6:26 AM Tue, Jun 1, 1920 · UTC+8 2:10 PM Mon, May 8, 1922 · UTC+8
Seoul South Korea 7:26 AM Tue, Jun 1, 1920 · UTC+9 3:10 PM Mon, May 8, 1922 · UTC+9
Tokyo Japan 7:26 AM Tue, Jun 1, 1920 · UTC+9 3:10 PM Mon, May 8, 1922 · UTC+9
Adelaide Australia 7:56 AM Tue, Jun 1, 1920 · UTC+9:30 3:40 PM Mon, May 8, 1922 · UTC+9:30
Brisbane Australia 8:26 AM Tue, Jun 1, 1920 · UTC+10 4:10 PM Mon, May 8, 1922 · UTC+10
Sydney Australia 8:26 AM Tue, Jun 1, 1920 · UTC+10 4:10 PM Mon, May 8, 1922 · UTC+10
Auckland New Zealand 9:56 AM Tue, Jun 1, 1920 · UTC+11:30 5:40 PM Mon, May 8, 1922 · UTC+11:30

Stations from the NASA JPL DE440 ephemeris. Swiss Ephemeris agrees on every Mars station 1900–2050: all within a minute. Local times: IANA time zones, to the minute.

Mars in 1921: a year between two loops

706 days separate the end of one Mars retrograde from the start of the next, and 1921 falls entirely inside that stretch. Mars turns back once every 779.94 days — longer than a calendar year — and each loop is over in weeks, so now and then a whole year passes between two of them.

The loops themselves are on the 1920 and 1922 pages.

Computed from the actual motion

The nearest Mars retrogrades either side of 1921

Previous

1920 Ended May 31, 1920 after 78 days, moving back 17.85° through the zodiac.

Next

1922 Begins May 8, 1922 and runs 70 days.

Gap across 1921

1.9 years between the two — long enough for a whole calendar year to fall inside it with nothing to report.

Both dates are computed from the planet’s apparent motion, not taken from a table. A retrograde begins the moment its daily movement against the stars turns negative, and that moment is findable to the hour.

Computed for 1921

Mars through the zodiac in 1921

Every sign Mars occupies during 1921, with the dates it enters and leaves. A sign that appears twice means the planet backed into the previous sign during a retrograde and crossed again.

Mars in Aquarius From Jan 1 – Jan 5
Mars in Pisces Jan 5 – Feb 13
Mars in Aries Feb 13 – Mar 25
Mars in Taurus Mar 25 – May 6
Mars in Gemini May 6 – Jun 18
Mars in Cancer Jun 18 – Aug 3
Mars in Leo Aug 3 – Sep 19
Mars in Virgo Sep 19 – Nov 6
Mars in Libra Nov 6 – Dec 26
Mars in Scorpio Dec 26 – Dec 31 and beyond

10 segments in 1921. Dates from NASA JPL’s DE440 ephemeris.

1921 at a glance

Every other retrograde in 1921

Pluto in Cancer Oct 9, 1920 – Mar 21, 1921 · 163 days
Neptune in Leo Nov 16, 1920 – Apr 22, 1921 · 157 days
Jupiter in Virgo Jan 3, 1921 – May 6, 1921 · 122 days
Saturn in Virgo Jan 4, 1921 – May 20, 1921 · 136 days
Mercury in Pisces Feb 21, 1921 – Mar 16, 1921 · 22 days
Venus in Taurus Apr 1, 1921 – May 14, 1921 · 43 days
Uranus in Pisces Jun 14, 1921 – Nov 15, 1921 · 154 days
Mercury in Cancer Jun 25, 1921 – Jul 19, 1921 · 24 days
Pluto in Cancer Oct 11, 1921 – Mar 22, 1922 · 163 days
Mercury in Scorpio Oct 19, 1921 – Nov 9, 1921 · 20 days
Neptune in Leo Nov 18, 1921 – Apr 24, 1922 · 157 days
← 1920 Mars retrograde in 1920. All Mars retrogrades Averages, shadow periods and the sign distribution over fifty years. 1922 → Mars retrograde in 1922.

Cite this page

AstroHot. “Mars Retrograde 1921: None — Next Starts May 8, 1922.” Accessed November 1, 2026. https://astrohot.com/retrograde/mars/1921/

For Wikipedia {{cite web |title=Mars Retrograde 1921: None — Next Starts May 8, 1922 |url=https://astrohot.com/retrograde/mars/1921/ |website=AstroHot |access-date=2026-11-01}}