In 1988, Mercury has three retrograde periods: in Aquarius, Gemini and Libra. The first begins on February 2. The last ends on October 20.
Retrograde periods in 1988
February 2 – February 23
Over
- Shadow begins
- Retrograde begins
- Turns direct
- Shadow ends
- Sign
- Aquarius
- Length
- 21 days
May 31 – June 24
Over
- Shadow begins
- Retrograde begins
- Turns direct
- Shadow ends
- Sign
- Gemini
- Length
- 24 days
September 28 – October 20
Over
- Shadow begins
- Retrograde begins
- Turns direct
- Shadow ends
- Sign
- Libra
- Length
- 22 days