Michaelmas
Not really a Regency thing, but this holiday used to always make me scratch my head in Medievals.
Merriam-Webster
mɪkəlməs
September 29 celebrated as the feast of Saint Michael the Archangel.
Wikipedia
Michaelmas (pronounced /’mɪkəlməs/) or the Feast of Ss. Michael, Gabriel and Raphael is a day in the Christian calendar, taking place on 29 September. It is one of the English and Welsh and Irish quarter days.
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During the Middle Ages, Michaelmas was a great religious feast and many popular traditions grew up around the day, which coincided with the harvest in much of western Europe. In England it was the custom to eat a goose on Michaelmas, which was supposed to protect against financial need for the next year. In Ireland, finding a ring hidden in a Michaelmas pie meant that one would soon be married.
