June 23 is Midsummer Night's Eve, also called St. John's Eve. St. John is the patron saint of beekeepers. It's a time when the hives are full of honey. So the full moon that comes this month was called the "mead moon" because honey was fermented to make mead, which is where the word "honeymoon" comes from. It's a time for lovers. As an old Swedish proverb says, "Midsummer night is not long, but it sets many cradles rocking."
-- The Writer’s Almanac