Station instants computed with Swiss Ephemeris to the minute, in UTC. Mars is retrograde about 0.47 times a year for 58–81 days.
Mars is retrograde once in 1901: from Jan 13, 1901, 07:04 UTC at 12°33′ Virgo until Apr 4, 1901, 06:52 UTC at 23°04′ Leo.
| Stations retrograde | At | Stations direct | At | Days | Arc | Pre-shadow from | Post-shadow to |
|---|---|---|---|---|---|---|---|
| Jan 13, 1901, 07:04 UTC | 12°33′ Virgo | Apr 4, 1901, 06:52 UTC | 23°04′ Leo | 80.99 | 19.48° | 23°04′ Leo | 12°33′ Virgo |
| Instant (UTC) | From | To |
|---|---|---|
| Mar 1, 1901, 19:28 UTC | Virgo | Leo |
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