In message , p forsdick
writes
Hi
if you lived on Mars how often if ever would you see a transit of earth and
is it as rare as the forthcoming venus transit


Transits of Earth are very rare - the last was on 11 May 1984 and was
the subject of Arthur Clarke's short story with that name. He used the
calculations by Jan Meeus which were published in the Journal of the
British Astronomical Association vol. 72 no 6, 1962.
The next one is on 10 November 2084.
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