The Zadok Calendar: Examining the 364-Day Biblical Calendar

Posted: August 28, 2026



Introduction

For centuries, the question of which calendar aligns with the Creator’s intended order has been a subject of deep study, debate, and devotion among seekers of biblical truth. Among the various calendar systems—Gregorian, rabbinic lunar, Karaite, and others—one ancient system has captured the attention of modern restoration communities: the Zadok (Enoch) 364-day solar calendar.

Preserved in the Dead Sea Scrolls and described in the books of 1 Enoch and Jubilees, this calendar presents a beautifully symmetric structure rooted in the creation narrative of Genesis 1:14—the day the luminaries were appointed as signs for seasons, days, and years.

This guide brings together a comprehensive overview of the Zadok calendar: how it works, today’s date on that calendar, the appointed times for 2026, the priestly rotation system, and the intercalary methods used to keep the calendar aligned with the solar year.




What Is the Zadok Calendar?

The Zadok calendar is a fixed 364-day solar calendar that divides the year into four equal quarters of 91 days each (13 weeks per quarter, 52 weeks total). Its defining characteristics include:

  • Year begins on the 4th day of the week (Wednesday), corresponding to the day the luminaries were created in Genesis 1:14
  • Twelve months of 30 days each(360 days), plus four intercalary days placed at the end of the 3rd, 6th, 9th, and 12th months to mark the seasons (364 days total)
  • Every feast day falls on the same day of the week every year—the calendar never shifts
  • Solar only—the moon is excluded from calendrical calculation
  • Each week begins on the 4th day(Wednesday) and the Sabbath always falls on the same calendar position

As 1 Enoch 74:13 states: “The year is precisely 364 days long.” And Jubilees 6:32 commands: “And command the children of Israel that they observe the year according to this reckoning, 364 days.”




Today’s Date on the Zadok Calendar

For the 2026–2027 cycle, the Zadok calendar year began on Wednesday, March 25, 2026—the first Wednesday on or after the spring equinox. The months are laid out as follows:

Zadok Month Name Gregorian Range (2026–2027)
Month 1 Aviv March 25 — April 23
Month 2 Ziv April 24 — May 23
Month 3 Sivan May 24 — June 23
Month 4 Tammuz June 24 — July 23
Month 5 Av July 24 — August 22
Month 6 Elul August 23 — September 22
Month 7 Tishrei September 23 — October 22
Month 8 Cheshvan October 23 — November 21
Month 9 Kislev November 22 — December 21
Month 10 Tevet December 22 — January 20
Month 11 Shevat January 21 — February 19
Month 12 Adar February 20 — March 21


Counting from August 23 as Day 1 of Elul:

Today, August 28, 2026, is the 6th day of Elul (Month 6) on the Zadok calendar—a Friday, the preparation day before the Sabbath.


A Note on the Year Number

The Zadok calendar itself is primarily concerned with the ordering of days, weeks, months, and appointed times rather than maintaining a single continuous year count. Different reckonings exist across communities:

  • Enochian year counting (reckoning from creation through the Enoch chronology) places this year at approximately 7964
  • Hebrew/Masoretic reckoning(counting from creation) places this around 5786, though that system uses the lunisolar calendar, not the Zadok solar calendar
  • Some communities track the year by its position in the 6-year priestly cycle, with intercalation tied to the completion of that cycle

There is no single universally agreed-upon year number across all Zadok-observing groups.




The Appointed Times (Mo’adim) for 2026

Because the Zadok calendar’s structure never shifts, every appointed time falls on a fixed weekday each year. This is one of the calendar’s most celebrated features—the mo’adim never “move around” as they do in the lunar calendar.

Below are the commonly cited dates for the 2026 cycle:

Feast Zadok Date Gregorian 2026 Weekday
Passover (Pesach) Aviv 14 April 7 Tuesday
Unleavened Bread Aviv 15–21 April 8–14 Wed–Tue
First Fruits (Bikkurim) Aviv 26 April 19 Sunday
Counting the Omer Aviv 26 – Elul 5 April 19 – Aug 29
Weeks (Shavuot / Pentecost) Sivan 6 June 7 Sunday
Trumpets (Yom Teruah) Tishrei 1–2 September 23–24 Wed–Thu
Day of Atonement (Yom Kippur) Tishrei 10 October 2 Friday
Tabernacles (Sukkot) Tishrei 15–21 October 7–13 Wed–Tue
Eighth Day (Shemini Atzeret) Tishrei 22 October 14 Wednesday
Dedication (Hanukkah) Kislev 25 – Tevet 2/3 December 5–12 Sat–Sat


Variations Among Communities

Minor date variations (typically ±1 day) exist among calendar-keeping communities. These differences usually stem from:

  • Whether the year begins on the Wednesday of the equinox week or the Wednesday on or after the equinox
  • How sunset-to-sunset day boundaries are calculated for a given location
  • Slight variations in anchoring the “Head of Year”

If you are observing the calendar, consult your specific community or ministry for their official reckoning.




The Priestly Rotation System

One of the most fascinating aspects of the Zadok calendar is its integration with the priestly service schedule—a rotation of 24 divisions established by King David in 1 Chronicles 24.


The 24 Divisions

Aaron’s descendants were organized into 24 priestly families, each serving one week at a time in the Temple. During the three pilgrimage feasts (Passover, Shavuot, and Sukkot), all 24 courses served together. The 24 divisions, in order, are:

  1. Jehoiarib
  2. Jedaiah
  3. Harim
  4. Seorim
  5. Malkijah
  6. Mijamin
  7. Hakkoz
  8. Abijah
  9. Jeshebeab
  10. Abijah (second course of this name)
  11. …through to…
  12. Maaziah


The Six-Year Cycle

The priestly rotation operates on a six-year cycle:

  • Each of the 24 divisions serves exactly 13 weeks during the full 6-year course
  • The cycle totals 2,184 days (6 × 364 days)
  • The starting division rotates each year:
    • Year 1: Gamul
    • Year 2: Jedaiah
    • Year 3: Mijamin
    • Year 4: Shecaniah
    • Year 5: Yeshebeab

    • Year 6: Aphses


Where We Are Now

Based on calendar calculations, 2026 corresponds to Year 4 of the 6-year priestly cycle, which began with the Shecaniah division. The division of Abijah (course #8) holds particular historical significance—it is the division of Zechariah, father of John the Immerser (Luke 1), and many connect this to Messianic chronology and the timing of the Messiah’s birth.

Each priestly week transitions at Sabbath sunset, when the outgoing division would depart and the incoming division would begin their service, marked by the replacement of the showbread.




The Intercalary System: Keeping the Calendar Aligned

This is perhaps the most debated and technically complex aspect of the Zadok calendar. The fundamental challenge is mathematical: the calendar specifies exactly 364 days per year, but the actual solar year is approximately 365.242 days. That missing 1.24 days per yearcreates a slow drift that, left uncorrected, would eventually move the feasts completely out of their appointed seasons.

Several approaches have been proposed:



Approach A: No Intercalation (Pure 364-Day View)

Some communities hold that the calendar should never add days—strictly 364 days every year, forever, as the ancient texts state.

  • Rationale: 1 Enoch 74 and Jubilees 6:32 explicitly state the year is precisely 364 days, with no mention of additions
  • Drift: ~1.24 days per year; after 6 years, approximately one full week of drift; after 30 years, more than a month
  • Theological position: Enoch himself prophesied this drift—”in the years of the sinners, the fruits will be tardy on their fields”—interpreted as a consequence of calendar corruption rather than a design flaw
  • Some adherents believe the earth originally had a perfect 364-day year and that the change to ~365.24 days occurred as a result of catastrophic geological events at the time of the Flood



Approach B: Six-Year Leap Week

Based on calendrical Dead Sea Scrolls (particularly 4Q3194Q320–4Q330), some propose adding a leap week at the conclusion of every six-year priestly cycle.

  • Mechanism: Insert one 7-day week after the 12th month (Adar) at the end of every 6th year, before the new year begins
  • Math: (6 × 364) + 7 = 2,191 days over 6 years
  • Average year length: ~365.17 days (still slightly short of 365.242, but much closer)
  • Advantage: Preserves the 52-week structure within each cycle and keeps the Sabbath uninterrupted
  • Criticism: Violates the strict “364 days, no more, no less” instruction in Jubilees and Enoch



Approach C: Three-Year Lunar Reconciliation (Gamul/Shecaniah System)

Documented in DSS 4Q319, this approach uses a 30-day intercalary month every three years to reconcile the solar and lunar cycles.

  • Mechanism: The priestly families Gamul and Shecaniah alternate every three years as a sign (ot) that a 30-day month should be added
  • Math: 3 × 364 (solar) = 1,092 days; 3 × 354 (lunar) = 1,062 days; the 30-day addition bridges the gap (1,062 + 30 = 1,092)
  • Purpose: Keeps the Zadok solar calendar synchronized with lunar observances, which some communities still track for agricultural or supplementary purposes
  • Average year length: ~364.33 days (still short of the true solar year, requiring further correction over longer periods)



Approach D: The Great Year Long-Term Correction

A sophisticated long-term scheme proposes corrections over a 364-year “Great Year” cycle:

  • Cycle: 364 years, divided into five periods
  • Correction: Skip two extra weeks—one in the 3rd Great Year and one in the 5th Great Year—within the 364-year cycle
  • Average year length achieved365.2423 days—remarkably close to the modern tropical year of 365.2422 days
  • Source: Scholarly interpretation of 1 Enoch 74 and later calendrical calculations
  • Significance: This would eliminate seasonal drift almost entirely without breaking the 52-week structure in ordinary years



Comparison of Intercalation Approaches

Approach Method Frequency Avg. Year Length Accepts Drift?
Pure 364 None Never 364 days Yes (viewed as prophetic)
6-Year Leap Week +7 days Every 6 years ~365.17 days Partially
3-Year Moon Sync +30 days Every 3 years ~364.33 days No (partial correction)
Great Year Skip 2 weeks Per 364-year cycle 365.2423 days No (near-perfect alignment)



Concluding Thoughts

The Zadok calendar represents one of the most meticulously structured timekeeping systems in human history. Whether one regards it as the divinely ordained calendar—as many sincere believers do—or as one of several ancient frameworks worthy of study, its mathematical elegance, scriptural grounding, and priestly integration make it a subject of genuine fascination.

Sincere believers across multiple traditions—rabbinic, Karaite, Zadok/Enoch, and others—hold different convictions on the question of which calendar is “the true one.” This guide has attempted to present the Zadok system faithfully and accurately, honouring the conviction of those who follow it while acknowledging the broader landscape of interpretation.

For those who choose to observe this calendar, the most practical path is to follow the calculations published by the community or ministry whose authority you trust, and to study the source texts—the Dead Sea Scrolls, 1 Enoch, Jubilees, and 1 Chronicles 24—for yourself.




Sources Referenced

  • Dead Sea Scrolls: 4Q319, 4Q320–4Q330, 4Q394 (calendrical texts)
  • 1 Enoch (especially chapters 72–82)
  • Book of Jubilees (especially chapter 6)
  • 1 Chronicles 24 (priestly divisions)
  • Zadokiah.org — Zadokite Calendar 2026–2027
  • HalleluYah Prints — Enochian Solar Calendar 2026
  • TorahIsLight.org — Zadok Basics
  • GospelWorthDyingFor.com — Decoding the Zadok Priestly Calendar
  • FathersAlphabet.com — To the Watchmen: Father’s 364 Day Calendar
  • Wikipedia — Enoch Calendar (long-term intercalation model)



Disclaimer

The information presented in this blog post is compiled from publicly available internet sources, ancient texts, and community-published calendar materials. It reflects the author’s private interpretation and synthesis of those sources at the time of writing (August 2026). Calendar calculations, dates, and theological interpretations may vary significantly among different communities, ministries, and scholars. Nothing in this article should be construed as legal, spiritual, or professional advice, nor as an authoritative declaration of religious truth. Readers are encouraged—and expressly urged—to conduct their own independent research, consult primary source texts, and seek guidance from trusted spiritual leaders before making any decisions regarding calendar observance, religious practice, or related matters. The author assumes no responsibility, legal or otherwise, for any actions taken based on the information contained herein.