Using a common “Ezekiel / Scriptural calendar” method where Aviv 1 is set by the first New Moon on/after the Spring (vernal) equinox, and the calendar day is treated as beginning at dark (per the method used in the source I’m basing these calculations on). (seedofabraham.net)
Anchor points for the year (how the dates are set)
- Vernal Equinox: Fri, March 20, 2026 (9:46 AM) (seedofabraham.net)
- Aviv 1 (New Year / 1st month begins): Sabbath, March 21, 2026 (begins the night before at dark) (seedofabraham.net)
2026 Biblical Feasts (Leviticus 23)
Passover (lamb slain) — Aviv 14
- Friday, April 3, 2026 (seedofabraham.net)
Feast of Unleavened Bread — Aviv 15–21
- Begins: Friday night, April 3, 2026 (at dark) (this is Aviv 15) (seedofabraham.net)
- 1st High Day (Annual Sabbath): Aviv 15 — Sat, April 4, 2026 (seedofabraham.net)
- 7th day / 2nd High Day: Friday, April 10, 2026 (begins Thurs night at dark) (seedofabraham.net)
Firstfruits (First Sheaf)
- Sunday, April 5, 2026 (seedofabraham.net)
Feast of Weeks (Shavu’ot / Pentecost)
- Sunday, May 24, 2026 (begins Sat night at dark) (seedofabraham.net)
Fall Feasts (7th month: Aetanim)
Feast of Trumpets (Yom Teruah) — Aetanim 1
- Sunday, September 13, 2026 (begins Sat night at dark) (seedofabraham.net)
Day of Atonement (Yom Kippur) — Aetanim 10
- Tuesday, September 22, 2026 (begins Mon night at dark) (seedofabraham.net)
Feast of Tabernacles (Sukkot) — Aetanim 15–21
- Begins: Sunday, September 27, 2026 (begins Sat night at dark) (seedofabraham.net)
The 8th Day (Shemini Atzeret / “8th Day”) — Aetanim 22
- Sunday, October 4, 2026 (begins Sat night at dark) (seedofabraham.net)