Many festivals have long included gambling as part of the celebration, but...

https://www.4shared.com/office/jkP4aDxIge/pdf-21642-27049.html

Many festivals have long included gambling as part of the celebration, but calendars helped mark a clear end to the risk. Take Saturnalia in ancient Rome or Diwali’s popular teen patti game—set dates kept the fun from spilling into everyday life