- I've been trying to match up the Heian lunar calendar with the modern calendar, and I'm have a bit of trouble. Does it follow the lunar calendar in that a month is one new moon to the next, or was it set at exactly 30 days for every month? When exactly was the new year? I've seen both one and two new moons after the winter solstice cited, as well as "when the sun enters the sign of the fish" on Sengoku Daimyo, but I have no idea how to tell exactly when that is. Any help with this would be greatly appreciated, I'm having a lot of trouble hammering things out.
Thank you, everyone! Everything here has been really helpful, and has definitely made a few things click for me that I was struggling with before.

---In sca-jml@yahoogroups.com, <kvicklund@...> wrote:

>>>8) each month contains exactly 1 of the odd (I think) numbered solar terms>>>9) if a month does not contain an odd numbered solar term, it is an intercalary month and treated as if it were part of the previous monthMy apologies, it is even-numbered solar terms. The first solar term is the beginning of Japanese spring, around February 4th (often as not, this falls after the New Year). The winter solstice is the 22nd solar term. Note that if you divide the even-numbered term by two, you get the number of the month in which it falls. Also, if there are twelve new moons between two winter solstices, there will be an intercalary month sometime during that span.-Sugawara no Tokihira