March 21, 2027 falls on a Sunday
March 21, 2027 is a Sunday. It is 179 days from today, September 23, 2026. The date is day 80 of 365 in 2027, it sits in ISO week 11, and it is the 21st of a 31-day month with 10 days after it.
What day of the week is March 21?
In 2027 it is a Sunday. The weekday is not a property of the date itself, it is a property of the date in a given year, so the honest answer always names the year. A common year is 365 days, which is 52 weeks plus one spare day, so a fixed date moves forward one weekday from one year to the next. A leap year inserts a second spare day, so the step is two whenever 29 February falls inside the gap. That is why March 21 works its way around the week rather than repeating on a tidy schedule.
March 21 in the next few years
| Year | Weekday | Day of year | ISO week | Leap year |
|---|---|---|---|---|
| 2026 | Saturday | 80 | 12 | no |
| 2027 | Sunday | 80 | 11 | no |
| 2028 | Tuesday | 81 | 12 | yes |
| 2029 | Wednesday | 80 | 12 | no |
| 2030 | Thursday | 80 | 12 | no |
| 2031 | Friday | 80 | 12 | no |
| 2032 | Sunday | 81 | 12 | yes |
| 2033 | Monday | 80 | 12 | no |
Between 2026 and 2027 the weekday moves from Saturday to Sunday, a step of 1. The day-of-year column also moves: March 21 is day 80 in a common year and day 81 in a leap year, because it sits after 29 February.
How often does March 21 fall at a weekend?
Counting the 28 occurrences from 2027 to 2054, March 21 lands on a Saturday 4 times and on a Sunday 4 times, so 8 of those 28 years put it at a weekend. Over a full 28-year stretch the Gregorian calendar repeats itself, and a fixed date visits each weekday four times, so the long-run answer is two weekend years in every seven.
Where March 21 sits in the calendar
March 21 is the 21st day of March, a month of 31 days in 2027, leaving 10 days of the month after it. Measured from 1 January it is 79 days into the year, and 285 days remain to 31 December, which puts it 21.9% of the way through 2027. In March 2027 the other Sundays are the 7th, 14th, 28th, because weekdays repeat every seven days inside a month just as they do across one.
What else happens around March 21?
| Date | Occasion | Type | Days from March 21 |
|---|---|---|---|
| March 17 | St Patrick's Day | observance | 4 before |
| March 20 | March equinox | astronomical | 1 before |
How far away is March 21?
The next March 21 is Sunday, March 21, 2027, 179 days from today. That is 25 whole weeks and 4 days, or 25.6 weeks written as a decimal. To count towards it second by second, use the date calculator.
Questions
- What day of the week is March 21, 2027?
- A Sunday. It is day 80 of 365 and falls in ISO week 11.
- What day of the week is March 21 next year?
- In 2027 it is a Sunday.
- What number day of the year is March 21?
- Day 80 in a common year and day 81 in a leap year. See day 80 for more.
- Which week of the year is March 21 in?
- ISO week 11 in 2027. The week 11 page lists every date in it.
Nearby dates
The 21st of other months
All 366 dates · Week 11 · Day 80 of the year · Event countdowns · When is it? · Date calculator