Harptos to Gregorian Calendar Conversion

This conversion uses 2008 and The Year of the Ageless One 1479 DR as the benchmark point. I use this page to convert birthdays to in-game days, to know when the phases of Selune change (based on real world moon phases), as well as to help me date my journal entries properly.

Quick Summary

  • 365 days, divided into twelve 30-day months. In between certain months are five festival days. On “leap year” a sixth festival day called “Shieldmeet” is added after Midsummer.

A Leap Year (Shieldmeet)

  • Jan 1-30 = Hammer 1-30
  • Jan 31 = Midwinter Festival
  • Feb 1-29 = Alturiak 1-29
  • Mar 1 = Alturiak 30
  • Mar 2-31 = Ches 1-30 (Mar 20/Ches 19 Spring Equinox)
    • 4th – Doran BDay
  • Apr 1-30 = Tarsakh 1-30
  • May 1 = Greengrass Festival
  • May 2-31 = Mirtul 1-30
  • Jun 1-30 = Kythorn 1-30 (Jun 20/Kythorn 20 Summer Solstice)
    • 2nd – Braelyn BDay
  • Jul 1-30 = Flamerule 1-30
  • Jul 31 = Midsummer Festival
    • Alain BDay
  • Aug 1 = Shieldmeet Festival
  • Aug 2-31 = Elesias 1-30
  • Sep 1-30 = Eleint 1-30 (Sep 22/Eleint 22 Autumnal Equinox)
    • 12th – Dot BDay
    • 13th – Elithia BDay
  • Oct 1 = Highharvesttide Festival
  • Oct 2-31 = Marpenoth 1-30
  • Nov 1-30 = Uktar 1-30
  • Dec 1 = The Feast of the Moon
  • Dec 2-31 = Nightal 1-30 (Dec 21/Nightal 20 Winter Solstice)

A Normal Year

  • Jan 1-30 = Hammer 1-30
  • Jan 31 = Midwinter Festival
  • Feb 1-28 = Alturiak 1-28
  • Mar 1-2 = Alturiak 29-30
  • Mar 3-31 = Ches 1-29 (Mar 21/Ches 19 Spring Equinox)
  • Apr 1 = Ches 30
  • Apr 2-30 = Tarsakh 1-29
  • May 1 = Tarsakh 30
  • May 2 = Greengrass Festival
  • May 3-31 = Mirtul 1-29
  • Jun 1 = Mirtul 30
  • Jun 2-30 = Kythorn 1-29 (Jun 21/Kythorn 20 Summer Solstice)
  • Jul 1 = Kythorn 30
  • Jul 2-31 = Flamerule 1-30
  • Aug 1 = Midsummer Festival
  • Aug 2-31 = Elesias 1-30
  • Sep 1-30 = Eleint 1-30 (Sep 23/Eleint 23 Autumnal Equinox)
  • Oct 1 = Highharvesttide Festival
  • Oct 2-31 = Marpenoth 1-30
  • Nov 1-30 = Uktar 1-30
  • Dec 1 = The Feast of the Moon
  • Dec 2-31 = Nightal 1-30 (Dec 22/Nightal 21 Winter Solstice)

Moon Phases

Harptos to Gregorian Calendar Conversion

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