The calendar of Harptos

The world of the Forgotten Realms uses the Calendar of Harptos, named after the long-dead wizard who invented it. Each year of 365 days is divided into twelve months of thirty days each. Each month is divided into three tendays. Five special holidays fall between the months and mark the seasons. Another special holiday, Shieldmeet, is inserted into the calendar after Midsummer every four years.

Month	Name	Common Name
1	Hammer	Deepwinter
Annual holiday:	Midwinter
2	Alturiak	The Claw of Winter
3	Ches	The Claw of Sunsets
4	Tarsakh	The Claw of Storms
Annual holiday:	Greengrass
5	Mirtul	The Melting
6	Kythorn	The Time of Flowers
7	Flamerule	Summertide
Annual holiday: Quadrennial holiday:	Midsummer Shieldmeet
8	Eleasias	Highsun
9	Eleint	The Fading
Annual holiday:	Highharvesttide
10	Marpenoth	Leaffall
11	Uktar	The Rotting
Annual holiday:	The Feast of the Moon
12	Nightal	The Drawing Down