Calendar

Calendar of Harptos
The Calendar of Harptos was the calendar used across most of Faerûn. It was created by the wizard Harptos of Kaalinth, although most people associate the word "Harptos" with the calendar. It was split into twelve months, each lasting three tendays (or thirty days). There were an additional five days that fell between months, bringing the total number of days in most years to 365.
The names of the months and festivals used in Faerûn were as follows:
1. Hammer ("Deepwinter")

Midwinter between Hammer 30 and Alturiak 1

2. Alturiak (pronounced: /ɔːlˈtɜːriɑːk/ awl-TUR-ee-ak, "The Claw of Winter" or "The Claws of the Cold")
3. Ches ("The Claw of Sunsets")

• Spring Equinox on Ches 19
  

4. Tarsakh (pronounced: /ˈtɑːrsɑːk/ TAR-sack, "The Claw of Storms")

Greengrass between Tarsakh 30 and Mirtul 1

5. Mirtul (pronounced: /ˈmɛrtʊl/ MER-tul, "The Melting")
6. Kythorn (pronounced: /ˈkaɪθɔːrn/ KY-thorn "The Time of Flowers")

• Summer Solstice on Kythorn 20
  

7. Flamerule (pronounced: /ˈflɑːmɛruːl/ FLAME-rool, "Summertide")

Midsummer between Flamerule 30 and Eleasias 1

Shieldmeet occurs the day after Midsummer, once every four years

8. Eleasis (pronounced: /ɛˈlisɪs/ eh-LEE-sis, "Highsun")
9. Eleint (pronounced: /ɛˈlɑːɪnt/ eh-LAINT, "The Fading")

• Autumn Equinox on Eleint 21
  

Highharvestide between Eleint 30 and Marpenoth 1

10. Marpenoth ("Leaffall")
11. Uktar ("The Rotting")

Feast of the Moon between Uktar 30 and Nightal 1

12. Nightal ("The Drawing Down")

• Winter Solstice on Nightal 20