24th June is the Feast of St John the Baptist, an important celebration in the medieval and Tudor periods, with it coinciding with Midsummer.
Fairies, fires, dancing, feasting and drinking were all part of the celebrations.
I explain how this feast day was marked in the Tudor period, and how it is still celebrated today in my local area...
Book recommendations: "The English Year" by Steve Roud; "The Stations of the Sun" by Ronald Hutton