Festivals have long been times for games of chance, from Saturnalia dice throws...

https://calendar.cx/luck-on-the-calendar-holidays-built-around-games-of-chance/

Festivals have long been times for games of chance, from Saturnalia dice throws to Diwali teen patti and Lunar New Year mahjong. These celebrations often set a clear calendar end, helping prevent gambling from spilling into everyday life