User blog comment:Shaldemar/New World Calendar/@comment-70.190.216.70-20160622012344/@comment-70.190.216.70-20160622022146

Actually I was wrong. I dug up my World of Greyhawk Gazetteer and there is a calendar, but it is specific to Greyhawk only (7 day week, 4 weeks in a month, 3 months in a Season and 4 Seasons, with four 6 day festivals between each season for a total of 360 days in a year). Anyway D&D is a game system, not a game setting like Yggdrasil. Anyone is free is create their own game setting using D&D rules and each game setting can have their own calendar;