In 1937, Mercury has four retrograde periods: in Aquarius, Capricorn, Taurus, Virgo and Sagittarius. The first begins on January 5. The last begins on December 20 and runs into the new year.
Retrograde periods in 1937
January 5 – January 26
Over
- Shadow begins
- Retrograde begins
- Turns direct
- Shadow ends
- Sign
- from Aquarius into Capricorn
- Length
- 21 days
April 30 – May 24
Over
- Shadow begins
- Retrograde begins
- Turns direct
- Shadow ends
- Sign
- Taurus
- Length
- 24 days
August 31 – September 23
Over
- Shadow begins
- Retrograde begins
- Turns direct
- Shadow ends
- Sign
- Virgo
- Length
- 23 days
December 20, 1937 – January 9, 1938
Over
- Shadow begins
- Retrograde begins
- Turns direct
- Shadow ends
- Sign
- from Capricorn into Sagittarius
- Length
- 20 days