May 23rd is known by Discordians as Eris Day.
Eris is the Greek Goddess of Chaos for the Golden Apple of Discord incident wherein she instigated the Trojan War.
May being the fifth month and five being the number of chaos (the first break in the stable order of four), and twenty-three being particularly significant amongst Discordians.
Today is also the 70th Day (Pungenday) of the Season of Discord and the anniversary of The Defenestration of Prague in which a few royal officials were thrown out a window of Hradcany Castle by some noblemen, but survived the fall by landing in a cart full of manure and is central to the start of the Thirty Years’ War in 1618.
Happy Eris/Defenestration of Prague Day!