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 1978: from Dec 12, 1977, 19:12 UTC at 11°34′ Leo until Mar 2, 1978, 09:56 UTC at 22°17′ Cancer.
| Stations retrograde | At | Stations direct | At | Days | Arc | Pre-shadow from | Post-shadow to |
|---|---|---|---|---|---|---|---|
| Dec 12, 1977, 19:12 UTC * | 11°34′ Leo | Mar 2, 1978, 09:56 UTC | 22°17′ Cancer | 79.61 | 19.29° | 22°17′ Cancer | 11°34′ Leo |
* period crosses a year boundary and is listed in both years.
| Instant (UTC) | From | To |
|---|---|---|
| Jan 26, 1978, 01:59 UTC | Leo | Cancer |
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