Kepler had predicted a transit in 1631 (it occurred during the night in
Europe) and another in 1761. However, Jeremiah Horrocks realized
that, while over a century separates the orbital configurations
which produce the appearances, the transits themselves occur not
singly, but in a pair, eight years apart. Horrocks predicted and
observed the transit of Venus across the Sun's disk on November
24th, 1639 (December 6th on the modern calendar), in Lancashire.
Horrocks was twenty years old at the time (he died at 22).
The Dantzig astronomer, Johannes Hevelius, did not publish
Horrocks' treatise on the transit of Venus until 1662.