The first Transit of Venus in the 21st century took place on 8 June 2004. What was the date of the next one?

Question

Viewed from Earth, Venus crosses the sun twice every 100 to 120 years or so, about 8 years apart. The next is on 10-11 December 2117. When was the last?

Answer 1

June 2012
Transits of Venus occur in a pattern, with pairs of transits 8 years apart separated by much longer gaps, that repeats every 243 years. There was one due on 6 June 2012, and then in December 2117 and December 2125.