A Compact

But the bridge was full-sized

November 21 is the day that the settlers in Plymouth Colony signed the Mayflower Compact in 1620. Except that if you’d asked them at the time what day it was, they would have said it was November 11 — because it was. It didn’t become November 21 until 1752, when the old Julian calendar was finally ditched in favor of the Gregorian calendar, which is the…