What Day of the Week Is May 21?
May 21, 2027 falls on a Friday. This year, May 21, 2026 was a Thursday.
It is day 141 of 2027, and 224 days of the year come after it. The date sits in ISO week 20 and in the second quarter, April to June. North of the equator it is day 63 of spring, and summer starts on June 21. In Australia and the rest of the south, it is fall. The Moon is a waning gibbous that day, and the next full moon is on Friday, June 18, 2027. It is not a US federal holiday.
May 21 from 2025 to 2028
The same date in four years, side by side. Moon phases use US Eastern dates.
| Fact | 2025 | 2026 | 2027 | 2028 |
|---|---|---|---|---|
| Day of the week | Wednesday | Thursday | Friday | Sunday |
| Day of the year | 141 of 365 | 141 of 365 | 141 of 365 | 142 of 366 |
| Days left in the year | 224 | 224 | 224 | 224 |
| ISO week | 21 | 21 | 20 | 20 |
| Quarter | Q2 | Q2 | Q2 | Q2 |
| Season (north) | Day 63 of spring | Day 63 of spring | Day 63 of spring | Day 64 of spring |
| Moon (US Eastern) | Waning crescent | Waxing crescent | Waning gibbous | Waning crescent |
| US federal holiday | No | No | No | No |
| Other holidays | – | – | – | – |
Holidays on May 21
None of the 245 holidays and observances on this site is fixed to May 21.
Holidays that move with the calendar land on May 21 in some years from 2026 to 2035.
| Holiday or observance | Years on May 21 |
|---|---|
| Victoria Day | 2029, 2035 |
| Armed Forces Day | 2033 |
| Lag BaOmer | 2030 |
Born on May 21
In most horoscope tables, May 21 falls under Gemini, the sign that runs from May 21 to June 20. The Sun's move into Gemini can come a day later in some years, so a few tables still list May 21 under Taurus.
The birthstone for May is the emerald on the American Gem Society list.
May 21 every year from 1950 to 2049
Find the decade on the left, then the last digit of the year across the top. A baby born on May 21, 1990 arrived on a Monday, and one born on May 21, 2000 on a Sunday. Weekends are shaded.
| Years | …0 | …1 | …2 | …3 | …4 | …5 | …6 | …7 | …8 | …9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1950s | Sun | Mon | Wed | Thu | Fri | Sat | Mon | Tue | Wed | Thu |
| 1960s | Sat | Sun | Mon | Tue | Thu | Fri | Sat | Sun | Tue | Wed |
| 1970s | Thu | Fri | Sun | Mon | Tue | Wed | Fri | Sat | Sun | Mon |
| 1980s | Wed | Thu | Fri | Sat | Mon | Tue | Wed | Thu | Sat | Sun |
| 1990s | Mon | Tue | Thu | Fri | Sat | Sun | Tue | Wed | Thu | Fri |
| 2000s | Sun | Mon | Tue | Wed | Fri | Sat | Sun | Mon | Wed | Thu |
| 2010s | Fri | Sat | Mon | Tue | Wed | Thu | Sat | Sun | Mon | Tue |
| 2020s | Thu | Fri | Sat | Sun | Tue | Wed | Thu | Fri | Sun | Mon |
| 2030s | Tue | Wed | Fri | Sat | Sun | Mon | Wed | Thu | Fri | Sat |
| 2040s | Mon | Tue | Wed | Thu | Sat | Sun | Mon | Tue | Thu | Fri |
When May 21 is on the same weekday again
After 2027, May 21 is next a Friday in 2032. The next weekend May 21 is in 2028, on a Sunday.
| Day of the week | Next year after 2027 |
|---|---|
| Monday | 2029 |
| Tuesday | 2030 |
| Wednesday | 2031 |
| Thursday | 2037 |
| Friday | 2032 |
| Saturday | 2033 |
| Sunday | 2028 |
May 21 by year
| Year | Day of the week | Weekend or weekday |
|---|---|---|
| 2023 | Sunday | Weekend |
| 2024 | Tuesday | Weekday |
| 2025 | Wednesday | Weekday |
| 2026 | Thursday | Weekday |
| 2027 | Friday | Weekday |
| 2028 | Sunday | Weekend |
| 2029 | Monday | Weekday |
| 2030 | Tuesday | Weekday |
| 2031 | Wednesday | Weekday |
| 2032 | Friday | Weekday |
| 2033 | Saturday | Weekend |
| 2034 | Sunday | Weekend |
Why the weekday changes
A common year is 365 days, one day more than 52 weeks. So May 21 moves on one weekday each year: Thursday in 2026, Friday in 2027. The jump is two days when February 29 comes in between, so May 21, 2028 is a Sunday, two on from 2027's Friday. Between 1901 and 2099, the whole pattern repeats every 28 years.
More about May 21 on this site
May 21 questions
What day of the week is May 21, 2027?
May 21, 2027 is a Friday. It is day 141 of the year and falls in ISO week 20.
Is May 21 a holiday?
None of the holidays on this site is fixed to May 21. May 21, 2027 is not a US federal holiday. Some years it is Victoria Day instead, as in 2029.
Cite this page
APA: ClockTotals. (2026, November 6). What Day of the Week Is May 21? https://clocktotals.com/what-day-is/may-21/
MLA: “What Day of the Week Is May 21?” ClockTotals, 6 Nov. 2026, clocktotals.com/what-day-is/may-21/.
Link (HTML): <a href="https://clocktotals.com/what-day-is/may-21/">What Day of the Week Is May 21?</a>