User blog comment:Shaldemar/New World Calendar/@comment-70.190.216.70-20160622012344/@comment-70.190.216.70-20160623222709

I also looked at the Dragonlance and Forgotten Realms supplements I bought back in the 80's (Man I can't believe there were so many - no wonder I felt so poor back then - I guess I was a D&D otaku even before anyone in the US knew what an Otaku was), and I could not find any calendars for either world settings. However based on a history in the Dragonlance Atlas, it looks like the world of Krynn (setting for Dragonlance) used a 12 month calendar with 30 days in a month. I even looked at the Blackmoor supplement which is one of the very first D&D rule books from the 70's (Blackmoor was Dave Arneson's - co-creator of D&D - world setting) but there was actually nothing about Blackmoor the world in the supplement - just rules additions to the first 3 D&D rule books published in mid-70's. Greyhawk was the wrold setting created by E. Gary Gygax, the principal creator of D&D, who was such a control freak that he was eventually ousted as the head of TSR (much like Steve Jobs was originally ousted from Apple - unfortunately for Gygax he did not have a triumphant comeback like Jobs).