The Calendar of Harptos

Source: Dungeon Master’s Guide p. 33

MonthNameCommon Name
1HammerDeepwinter
Annual holiday: Midwinter
2AlturiakThe Claw of Winter
3ChesThe Claw of the Sunsets
4TarsakhThe Claw of the Storms
Annual holiday: Greengrass
5MirtulThe Melting
6KythornThe Time of Flowers
7FlameruleSummertide
Annual holiday: Midsummer
Quadrennial holiday: Shieldmeet
8EleasiasHighsun
9EleintThe Fading
Annual holiday: Highharvesttide
10MarpenothLeaffall
11UktarThe Rotting
Annual holiday: The Feast of the Moon
12NightalThe Drawing Down
^month-name-common-name