According to the theories of Aleister Crowley -- based largely upon obscure cabalistic theories and intensive heroin usage -- a single day of magickal initiation is made up of 73 terrestrial days, '73' being a numerical attribute of the theme/idea cluster called Chokmah.
Meanwhile, the Discordians have five seasons to their year, each being made up of 73 days (plus St. Tibb's Day once every four years).
Worse than taking Discordianism too seriously is not taking it seriously enough.