Concise Biblical Calendar
A comprehensive overview of the biblical calendar system based on Genesis 1:14-15—months as lunar cycles, first month determined by vernal equinox.
Read Summary | Download PDF Updated January 9, 2022This website provides studies on the Biblical calendar by Herb Solinsky, including the historical and scriptural basis for the luni-solar calendar used in ancient Israel. A holy day schedule for 2020-2030 is also provided based on astronomical calculations using the crescent moon sighting from Israel.
Biblical Calendar Studies
Historical Departure from the Biblical Calendar
Examines the biblical basis for the vernal equinox and moon in the calendar, and the historical shift away from the original observation-based system.
Read Summary | Download PDF Updated October 30, 2022Abridged Biblical Calendar
A condensed version covering divergent views on starting the month, ancient astronomy influences, and Psalm 81:3.
Read Summary | Download PDF Updated July 4, 2021Barley and the Calendar
Investigation of whether barley (aviv) determines the first month, concluding it cannot uniquely determine calendar timing.
Download PDF Updated June 12, 2022Start of a Biblical Day & the Sabbath
Examines when the biblical day begins (evening), the Sabbath timing, and "between the two evenings" in Exodus 12.
Download PDF Updated April 8, 2014Biblical Calendar Seminar
150-minute seminar covering Genesis 1:14-18, moon cycles, Aaronic priesthood role, and the new crescent determination.
Download PDF Updated July 12, 2022Evaluation of Rabbinic Literature
Critique of rabbinic literature's trustworthiness for history and Torah—argues Sadducees controlled the Temple.
Download PDF Updated October 28, 2022Vernal Equinox & Babylonian Calendar
Introduction to the calendar, light-bearers in Genesis, chodesh (new moon), and adoption of Babylonian month names.
Download PDF Updated January 9, 2022The Moon and the Sabbath
Refutes the "lunar Sabbath" theory that days 1, 8, 15, 22, 29 are Sabbaths—proves weekly cycle is fixed, not lunar.
Download PDF Updated December 17, 2017When Does the Biblical Year Begin?
Examines Gen 1:14-18, the zodiac, light triggers, and the vernal equinox as the annual calendar key.
Download PDF Updated July 27, 2018Two-Day Seminar with Zodiac
Extended seminar covering all calendar topics plus the zodiac's historical use among Jews in the first century.
Download PDF Updated June 27, 2021>Dead Sea Scrolls Calendar
Examines the 364-day Yahad calendar vs. the lunar biblical calendar, and the scrolls' historical context.
Download PDF Updated October 30, 2022Treatise on the Biblical Calendar
A comprehensive, well-documented study on how the calendar originally functioned (original version, not abridged).
Download PDF Updated April 3, 2009Holy Day Schedule for 2020-2030
The dates are derived from astronomical calculation using the luni-solar calendar based on crescent sighting from Israel. Holy days begin on the night of the previous numbered day.
| Year | First Day of First Month | Feast of Unleavened Bread | Pentecost | Feast of Trumpets | Day of Atonement | Feast of Tabernacles | Eighth Day |
|---|---|---|---|---|---|---|---|
| 2020 | Thursday, March 26 | April 9 - April 15 | Sunday, May 31 | Saturday, September 19 | Monday, September 28 | October 3 - October 9 | Saturday, October 10 |
| 2021 | Wednesday, April 14 | April 28 - May 4 | Sunday, June 20 | Friday, October 8 | Sunday, October 17 | October 22 - October 28 | Friday, October 29 |
| 2022 | Monday, April 4* | April 18 - April 24 | Sunday, June 12 | Wednesday, September 28 | Friday, October 7 | October 12 - October 18 | Wednesday, October 19 |
| 2023 | Thursday, March 23* | April 7 - April 13 | Sunday, May 28 | Sunday, September 17 | Tuesday, September 26 | October 1 - October 7 | Sunday, October 8 |
| 2024 | Wednesday, April 10 | April 24 - April 30 | Sunday, June 16 | Saturday, October 5* | Monday, October 14 | October 19 - October 25 | Saturday, October 26 |
| 2025 | Monday, March 31 | April 14 - April 20 | Sunday, June 8 | Wednesday, September 24* | Friday, October 3 | October 8 - October 14 | Wednesday, October 15 |
| 2026 | Saturday, March 21 | April 4 - April 10 | Sunday, May 24 | Sunday, September 13 | Tuesday, September 22 | September 27 - October 3 | Sunday, October 4 |
| 2027 | Friday, April 9 | April 23 - April 29 | Sunday, June 13 | Sunday, October 3 | Tuesday, October 12 | October 17 - October 23 | Sunday, October 24 |
| 2028 | Tuesday, March 28 | April 11 - April 17 | Sunday, June 4 | Thursday, September 21 | Saturday, September 30 | October 5 - October 11 | Thursday, October 12 |
| 2029 | Monday, April 16 | April 30 - May 6 | Sunday, June 24 | Wednesday, October 10 | Friday, October 19 | October 24 - October 30 | Wednesday, October 31 |
| 2030 | Friday, April 5 | April 19 - April 25 | Sunday, June 9 | Monday, September 30 | Wednesday, October 9 | October 14 - October 20 | Monday, October 21 |
*Note: First day of the year for 2022 and 2023 was a day later due to no visible sighting of the crescent in Israel due to weather. This shifted the Holy Days in the first month by 1 day and for 2022 shifted Pentecost by 1 week.