Quick answer
Days until Memorial Day = the date of the next Memorial Day minus your start date. Counting from 10 March 2024 the next one is Monday 27 May 2024, which is 78 days away.
Pick a start date (it defaults to today). The calculator returns the days, the weeks and days, and the weekday of the date.
Related tools: Days Until Labor Day: Days until US Labor Day (first Monday of September). Days Until Father's Day: Days until US Father's Day (third Sunday of June). Days Until Mother's Day: Days until US Mother's Day (second Sunday of May).
How to use the Days Until Memorial Day
- 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
days = next occurrence of US Memorial Day (last Monday of May) − start date
Exact integer day arithmetic in UTC.
Finds the next occurrence of US Memorial Day (last Monday of May) on or after the start date using its calendar rule. Dates follow the proleptic Gregorian calendar.
Worked examples
These examples are 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 |
|---|---|
| Days Until Memorial Day | 78 days |
| Date | 2024-05-27 |
| Weekday | Monday |
| Weeks and days | 11 weeks, 1 day |
Example 2
Inputs: Counting from = 2024-12-26.
| Result | Value |
|---|---|
| Days Until Memorial Day | 151 days |
| Date | 2025-05-26 |
| Weekday | Monday |
| Weeks and days | 21 weeks, 4 days |
The first line is the headline result (days Until Memorial Day). Below it the days Until Memorial Day lists date, weekday and weeks and days, which describe the same case from other angles. Exact integer day arithmetic in UTC.
About Memorial Day
Memorial Day is the last Monday of May, honouring military personnel who died in service. It has been observed on a Monday since 1971 and creates a long weekend that marks the start of summer.
The next dates
Upcoming dates: Monday 26 May 2025; Monday 25 May 2026; Monday 31 May 2027. The count is zero on the day itself, and once this year's date has passed the calculator moves on to the next one.
Days Until Memorial Day from different start dates
The same calculator run from 1 January of four consecutive years.
| Counting from | Days Until Memorial Day | Date | Weekday |
|---|---|---|---|
| 2026-01-01 | 144 | 2026-05-25 | Monday |
| 2027-01-01 | 150 | 2027-05-31 | Monday |
| 2028-01-01 | 149 | 2028-05-29 | Monday |
| 2029-01-01 | 147 | 2029-05-28 | Monday |
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 Days Until Memorial Day 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 |
|---|---|---|
| [Days Until Labor Day](/date-calendar/days-until-labor-day/) | Days Until Labor Day | |
| [Days Until Father's Day](/date-calendar/days-until-fathers-day/) | Days Until Father's Day | |
| [Days Until Mother's Day](/date-calendar/days-until-mothers-day/) | Days Until Mother's Day | |
| [Days Until MLK Day](/date-calendar/days-until-mlk-day/) | Days Until MLK Day | |
| [Days Until Inauguration Day](/date-calendar/days-until-inauguration-day/) | Days Until Inauguration Day |
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
How many days until Memorial Day from today?
Enter today as the start date. From 10 March 2024 the answer is 78 days.
What day of the week is it next year?
Upcoming weekdays: Monday 26 May 2025; Monday 25 May 2026; Monday 31 May 2027.
What does the Days Until Memorial Day calculate?
Days until US Memorial Day (last Monday of May). It returns Days Until Memorial Day, Date, Weekday and Weeks and days.
What formula does the Days Until Memorial Day use?
days = next occurrence of US Memorial Day (last Monday of May) − start date. Finds the next occurrence of US Memorial Day (last Monday of May) on or after the start date using its calendar rule.
What is an example of a days Until Memorial Day result?
With counting from 2024-03-10, the days Until Memorial Day is 78 days.
Related calculators
- Days Until Labor Day — Days until US Labor Day (first Monday of September).
- Days Until Father's Day — Days until US Father's Day (third Sunday of June).
- Days Until Mother's Day — Days until US Mother's Day (second Sunday of May).
- Days Until MLK Day — Days until US Martin Luther King Jr. Day (third Monday of January).
- Days Until Inauguration Day — Days until US Inauguration Day (20 January after a presidential election year).
- Days Until Presidents' Day — Days until US Washington's Birthday / Presidents' Day (third Monday of February).
- Days Until Leap Day — Days until 29 February (next leap year).
Sources
- US federal holiday rules: 5 U.S.C. § 6103
Content last reviewed 2026-11-04. Formulas and worked examples are checked by automated tests against independently computed values.