After careful consideration, and a few drinks, I've decided that the Metonic Cycle is the most sensible way to measure time. In particular, in 1995 the Winter Solstice and the New Moon coincided, which will re-occur in 2014, each Metonic Cycle having 19 years and 235 Lunar Months. So today is the 25th day of the 173rd month of the current cycle, and the 20th day of the 14th year.Now, if my number theory serves me, this suggests a clever way of keeping track of the day of the cycle: just multiply the day of the month by the day of the year, and you get a complete set of all of the numbers from zero to 6940 (the number of days in a complete cycle) over the course of a Cycle. So today would be day 500, and tomorrow will be day 546 (simple ordering is over-rated). Happy 500, everyone!The Metonic Cycle pairing of 19 Solar Years with 235 Lunar Months is off by a few hours, but very close. Every couple of lifetimes it would have to be adjusted by a day, but not very many people, relatively speaking, would even have to live with that.