Antinus Turmo Day is an unofficial day of celebration of the day Altinus Turmo was killed. It takes place every year on the 12th of Scera, the day he was lynched by a riotous mob. People celebrate by having promiscuous sex in defiance of the sterility resulting from the Turmocet vaccine.
The name is a clever bastardization of his name, replacing the beginning "Alti" with "Anti".