It happens rarely – usually no more than once a century or so – but when it does happen, it always occurs in pairs, eight years apart. It happened in 1761 and again in 1769. It will happen in 2117 and again in 2125. But it also happened in June 2004 and, in a little more than a month from now, at the beginning of June 2012, the second of this eight-year pair is scheduled to take place. What is it?
If you know the answers and are first to send them to me, you’ll win. Send your answers directly to me at firstname.lastname@example.org.