Humphrey Bogart, in whose honor Bogey's Day is celebrated.
Adam Gorightly has performed a public service by publishing a list of Discordian holidays created by Camden Benares, and when I say "public service," I'm not trying to be funny or sarcastic. Many of these holidays sound like great ideas; when I get a little time, I've going to enter them on my Google Calendar.
May 23 is celebrated as Buddha's Birthday. "Although the evidence that Buddha was a Discordian is circumstantial and anecdotal, Discordians celebrate Buddha’s birthday by saying 'Happy Birthday, Bud'.”