Quick answer
Weeks until Easter = ⌊days ÷ 7⌋ to the next Western Easter Sunday. From 10 March 2024 to Sunday 31 March 2024 is 21 days, exactly 3 weeks and 0 days.
Pick a start date. The calculator returns the weeks and days to the next Easter, its date, weekday and the total days.
Related tools: Weeks Until Christmas: Days and weeks until Christmas. Weeks Until Halloween: Days and weeks until Halloween. Weeks Until Thanksgiving: Days and weeks until US Thanksgiving (fourth Thursday of November).
How to use the Weeks Until Easter
- Optionally, pick counting from.
- Press Calculate to see the result, and use Reset to start again.
| Input | What to enter | Allowed values |
|---|---|---|
| Counting from (optional) | A calendar date. Leave blank to use today's date | — |
Formula and method
Formula
weeks = ⌊days ÷ 7⌋; days = next occurrence of Western Easter Sunday − start date
Exact integer day arithmetic in UTC.
Finds the next occurrence of Western Easter Sunday on or after the start date using its calendar rule (Western Easter by the Meeus/Jones/Butcher computus). Dates follow the proleptic Gregorian calendar.
Worked examples
This example is verified: each one is an automated test case that the live calculator must reproduce exactly.
Example 1
Inputs: Counting from = 2024-03-10.
| Result | Value |
|---|---|
| Time Until Easter | 3 weeks, 0 days |
| Date | 2024-03-31 |
| Weekday | Sunday |
| Total days | 21 |
The first line is the headline result (time Until Easter). Below it the weeks Until Easter lists date, weekday and total days, which describe the same case from other angles. Exact integer day arithmetic in UTC.
How Easter's date is set
Western Easter is the first Sunday after the first ecclesiastical full moon on or after 21 March, so it falls between 22 March and 25 April. Upcoming dates: 20 April 2025, 5 April 2026 and 28 March 2027.
Western versus Orthodox
Orthodox churches calculate Easter with the Julian calendar, so their date is usually later, sometimes by several weeks. This page uses the Western (Gregorian) date. The count is 0 on Easter Sunday itself.
Weeks Until Easter from different start dates
The same calculator run from 1 January of four consecutive years.
| Counting from | Time Until Easter | Date | Weekday |
|---|---|---|---|
| 2026-01-01 | 13 weeks, 3 days | 2026-04-05 | Sunday |
| 2027-01-01 | 12 weeks, 2 days | 2027-03-28 | Sunday |
| 2028-01-01 | 15 weeks, 1 day | 2028-04-16 | Sunday |
| 2029-01-01 | 12 weeks, 6 days | 2029-04-01 | Sunday |
What happens with invalid input
These messages are produced by the calculator itself, so you know what to fix.
- Counting from: entering "2024-02-30" shows "Counting from must be a valid date." beside that field and no result.
Choosing between the Weeks Until Easter and similar calculators
Each row shows what a related calculator on this site asks for and what it returns, so you can pick the one that matches your question.
| Calculator | You enter | It returns |
|---|---|---|
| [Weeks Until Christmas](/date-calendar/weeks-until-christmas/) | Time Until Christmas | |
| [Weeks Until Halloween](/date-calendar/weeks-until-halloween/) | Time Until Halloween | |
| [Weeks Until Thanksgiving](/date-calendar/weeks-until-thanksgiving/) | Time Until Thanksgiving | |
| [Days Until Easter](/date-calendar/days-until-easter/) | Days Until Easter | |
| [Days Until December](/date-calendar/days-until-december/) | Days Until December |
Background: date rules
Holiday dates are defined in three ways: a fixed day of the month, a weekday position such as the fourth Thursday of November, or a calendar calculation such as the date of Easter. Counts are in whole calendar days from the start date, and the date is the calendar date, not adjusted for your time zone or for days a workplace observes instead.
Assumptions and limitations
- Counting on the holiday itself gives 0
- After the date has passed this year the next year's date is used
If a required value is empty, not a number, or outside its allowed range, the form marks that field with a message and shows no result instead of a misleading number. The automated checks deliberately try invalid entries for counting from to confirm this.
Frequently asked questions
Why does Easter move every year?
It follows the Moon, not a fixed calendar date.
What is the earliest possible Easter?
The earliest Western Easter is 22 March; the latest is 25 April.
How many weeks from 1 February 2025?
11 weeks and 1 day to 20 April 2025.
What does the Weeks Until Easter calculate?
Days and weeks until Western Easter Sunday. It returns Time Until Easter, Date, Weekday and Total days.
What formula does the Weeks Until Easter use?
weeks = ⌊days ÷ 7⌋; days = next occurrence of Western Easter Sunday − start date. Finds the next occurrence of Western Easter Sunday on or after the start date using its calendar rule (Western Easter by the Meeus/Jones/Butcher computus).
What is an example of a weeks Until Easter result?
With counting from 2024-03-10, the time Until Easter is 3 weeks, 0 days.
Where does the method come from?
The method follows: US federal holiday rules: 5 U.S.C. § 6103; Easter: Meeus, Astronomical Algorithms (Gregorian computus); Calendar (New Style) Act 1750.
Related calculators
- Weeks Until Christmas — Days and weeks until Christmas.
- Weeks Until Halloween — Days and weeks until Halloween.
- Weeks Until Thanksgiving — Days and weeks until US Thanksgiving (fourth Thursday of November).
- Days Until Easter — Days until Western Easter Sunday.
- Days Until December — Days until 1 December.
- Days Until Christmas — Days until Christmas.
Sources
- US federal holiday rules: 5 U.S.C. § 6103
- Easter: Meeus, Astronomical Algorithms (Gregorian computus); Calendar (New Style) Act 1750
Content last reviewed 2026-11-04. Formulas and worked examples are checked by automated tests against independently computed values.