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.
Months and Festivals
- Hammer ("Deepwinter")
- Midwinter between Hammer 30 and Alturiak 1
- Alturiak (pronounced: /ɔːlˈtɜːriæk/ awl-TUR-ee-æk listen, "The Claw of Winter" or "The Claws of the Cold")
- Ches ("The Claw of Sunsets") [note 1]
- Spring Equinox on Ches 19
- Tarsakh (pronounced: /ˈtɑːrsæk/ TAR-sæk listen, "The Claw of Storms") [note 2]
- Greengrass between Tarsakh 30 and Mirtul 1
- Mirtul (pronounced: /ˈmɜːrtəl/ MUR-tuhl listen, "The Melting")
- Kythorn (pronounced: /ˈkaɪθɔːrn/ KIGH-thorn listen "The Time of Flowers")
- Summer Solstice on Kythorn 20
- Flamerule (pronounced: /ˈfleɪmruːl/ FLAYM-rool listen, "Summertide")
- Eleasis (pronounced: /ɛˈlisɪs/ eh-LEE-sis listen, "Highsun") [note 3][note 4]
- Eleint (pronounced: /ɛˈleɪnt/ eh-LAYNT listen, "The Fading")
- Marpenoth ("Leaffall")
- Uktar ("The Rotting")
- Feast of the Moon between Uktar 30 and Nightal 1
- Nightal ("The Drawing Down")
- Winter Solstice on Nightal 20
The days making up a tenday did not have formal names. If precision was required, the number of the day and the number of the tenday were used, as in, "the fourth day of the first tenday of Flamerule". Days of the month were typically written as the numerical date followed by the month name, for example, "15 Hammer" or "15th Hammer". Informally or poetically this could be spoken or written as "the 15th of Deepwinter".
- The common name of this month was changed from "The Claw of the Sunsets" by the Forgotten Realms Player's Guide for 4th edition (removed "the").
- The common name of this month was changed from "The Claw of the Storms" by the Sword Coast Adventurer's Guide for 5th edition (removed "the").
- This month was spelled "Eleasias" in the Forgotten Realms Campaign Set for 1st edition and the Forgotten Realms Campaign Setting for 2nd edition, but was spelled "Eleasis" in the Forgotten Realms Campaign Setting for 3rd edition, the Forgotten Realms Player's Guide for 4th edition, and the Sword Coast Adventurer's Guide for 5th edition.
- "Highsun" could also refer to noon.
- Ed Greenwood (March 1981). “The merry month of...Mirtul?”. In Jake Jaquet ed. Dragon #47 (TSR, Inc.), p. 24.
- Ed Greenwood, Sean K. Reynolds, Skip Williams, Rob Heinsoo (June 2001). Forgotten Realms Campaign Setting 3rd edition. (Wizards of the Coast), p. 76. ISBN 0-7869-1836-5.
- Jeff Grubb, Ed Greenwood and Karen S. Martin (1987). Forgotten Realms Campaign Set (Cyclopedia of the Realms). (TSR, Inc), p. 6. ISBN 0-8803-8472-7.
- Ed Greenwood, Sean K. Reynolds, Skip Williams, Rob Heinsoo (June 2001). Forgotten Realms Campaign Setting 3rd edition. (Wizards of the Coast), p. 77. ISBN 0-7869-1836-5.
- Christopher Perkins, James Haeck, James Introcaso, Adam Lee, Matthew Sernett (September 2018). Waterdeep: Dragon Heist. Edited by Jeremy Crawford. (Wizards of the Coast), p. 4. ISBN 978-0-7869-6625-7.
- Ed Greenwood (October 2012). Ed Greenwood Presents Elminster's Forgotten Realms. (Wizards of the Coast), p. 19. ISBN 0786960345.
- Rob Heinsoo, Logan Bonner, Robert J. Schwalb (September 2008). Forgotten Realms Player's Guide. (Wizards of the Coast), p. 155. ISBN 978-0-7869-4929-8.