I put this in the General forums thread, but thought I'd post here too..
I'm currently syncing my Breitling moon-phase to the lunar calendar now..
I'm using my wall atomic clock, which also has a moon-phase. It's currently at 5/6th of a full moon. On the day (and hopefully exact time) the atomic clock shows the full moon (which will be tomorrow at 8:35am EST) I'll advance my watches moon-phase to the first click of the full moon. From there it should be in-sync until the leap year (unfortunately, that's next month ).
You can also use any internet site which gives you the full moon data. A favorite of mine (and easy to use) is the US Navy Observatory's (
http://aa.usno.navy.mil/data/docs/MoonPhase.php ) Of course I'm new to moonphases, so there's may be an easier way....
Oh, and Scott - you'll probably need to adjust it on the March full moon (March 25th) as it'll be out of sync a day due to the leap year this year. After that though, you won't need to sync it until the next leap year. Of course, if you don't re-sync it, you'll just be off 1 day....