Tastigon Dates—Equivalents
Spring's Eve (new year begins)—March 1
Summer's Eve—May 1
High Summer's Day—July 1
Autumn's Eve—September 1
Feast of Dead Gods—(begins at midnight of Autumn's Eve and lasts until dawn)
Winter's Eve—November 1
Mid-Winter's Day—January 1
Feast of Fools—February 29
360 days = a year (361, actually, but the Feast of Fools is never counted)
Autumn =60 days
Winter = 120 days (60 to Mid-Winter's Day)
Spring = 60 days
Summer = 120 days (60 to High Summer's Day)
1 week = 10 days
The novel spans just over a year, beginning with the Feast of Dead Gods and ending a few days after the next Winter's Eve.