The calendar of Avgad/Tevel is a lunar one that revolves around the following months:
- Nissan
- Aries: March-April
- 30 days
- Governed by Bavel’s Bel (Beli Ya’al) and Agru Taleh
- Speech and the letter hë (ה)
- Iyyar
- Taurus: April-May
- 29 days
- Bavel governors: Ea and Gu Shor
- Thought and the letter ṿaṿ (ו)
- Siṿan
- Gemini: May-June
- 30 days
- Bavel governors: Sin and Mashtaba Te’amim
- Movement and the letter zayin
- Tammuz
- Cancer: June-July
- 29 days
- Bavel governors: Tammuz and Alluttu Sarṭen
- Sight and the letter ḥet
- Av (אב)
- Leo: July-August
- 30 days
- Bavel governors: Gilgamesh and Neshu Aryeh
- Hearing and the letter ṭet
- Elul (אלול)
- Virgo: August-September
- 29 days
- Bavel governors: Ishtar and Sisinnu Betulah
- Action and the letter yod
- Tishrei (Libra: September-October) 30 days
- Ḥeshṿan (Scorpio: October-November) 29 or sometimes 30 days
- Kisleṿ (Sagittarius: November-December) 30 or sometimes 29 days
- Ṭeveṭ (Capricorn: December-January) 29 days
- Shevat (Aquarius: January-February) 30 days
- ‘Adar Alef (additional month that happens on years 3, 6, 8, 11, 14, 17 and 19 in a 19-year cycle), 30 days
- ‘Adar (or ‘Adar Bet) (Pisces: February-March) 29 days
The Avgad calendar is based on the Hebrew calendar, whose month names are inspired by Babylon. Narrators are encouraged to consult a Hebrew calendar, especially online apps, if the intention is strict accuracy.