What Day of the Week Is October 21?
October 21, 2027 falls on a Thursday. This year, October 21, 2026 was a Wednesday.
It is day 294 of 2027, and 71 days of the year come after it. The date sits in ISO week 42 and in the fourth quarter, October to December. North of the equator it is day 29 of fall, and winter starts on December 21. In Australia and the rest of the south, it is spring. The Moon is a waning gibbous that day, and the next full moon is on Saturday, November 13, 2027. It is not a US federal holiday.
October 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 | Tuesday | Wednesday | Thursday | Saturday |
| Day of the year | 294 of 365 | 294 of 365 | 294 of 365 | 295 of 366 |
| Days left in the year | 71 | 71 | 71 | 71 |
| ISO week | 43 | 43 | 42 | 42 |
| Quarter | Q4 | Q4 | Q4 | Q4 |
| Season (north) | Day 30 of fall | Day 30 of fall | Day 29 of fall | Day 30 of fall |
| Moon (US Eastern) | New moon | Waxing gibbous | Waning gibbous | Waxing crescent |
| US federal holiday | No | No | No | No |
| Other holidays | – | – | – | – |
Holidays on October 21
None of the 245 holidays and observances on this site is fixed to October 21.
Holidays that move with the calendar land on October 21 in some years from 2026 to 2035.
| Holiday or observance | Years on October 21 |
|---|---|
| Isra and Mi'raj | 2033 |
| Karva Chauth | 2032 |
Born on October 21
In most horoscope tables, October 21 falls under Libra, the sign that runs from September 23 to October 22.
The birthstone for October is the opal, and the American Gem Society also lists tourmaline.
October 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 October 21, 1990 arrived on a Sunday, and one born on October 21, 2000 on a Saturday. Weekends are shaded.
| Years | …0 | …1 | …2 | …3 | …4 | …5 | …6 | …7 | …8 | …9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1950s | Sat | Sun | Tue | Wed | Thu | Fri | Sun | Mon | Tue | Wed |
| 1960s | Fri | Sat | Sun | Mon | Wed | Thu | Fri | Sat | Mon | Tue |
| 1970s | Wed | Thu | Sat | Sun | Mon | Tue | Thu | Fri | Sat | Sun |
| 1980s | Tue | Wed | Thu | Fri | Sun | Mon | Tue | Wed | Fri | Sat |
| 1990s | Sun | Mon | Wed | Thu | Fri | Sat | Mon | Tue | Wed | Thu |
| 2000s | Sat | Sun | Mon | Tue | Thu | Fri | Sat | Sun | Tue | Wed |
| 2010s | Thu | Fri | Sun | Mon | Tue | Wed | Fri | Sat | Sun | Mon |
| 2020s | Wed | Thu | Fri | Sat | Mon | Tue | Wed | Thu | Sat | Sun |
| 2030s | Mon | Tue | Thu | Fri | Sat | Sun | Tue | Wed | Thu | Fri |
| 2040s | Sun | Mon | Tue | Wed | Fri | Sat | Sun | Mon | Wed | Thu |
When October 21 is on the same weekday again
After 2027, October 21 is next a Thursday in 2032. The next weekend October 21 is in 2028, on a Saturday.
| Day of the week | Next year after 2027 |
|---|---|
| Monday | 2030 |
| Tuesday | 2031 |
| Wednesday | 2037 |
| Thursday | 2032 |
| Friday | 2033 |
| Saturday | 2028 |
| Sunday | 2029 |
October 21 by year
| Year | Day of the week | Weekend or weekday |
|---|---|---|
| 2023 | Saturday | Weekend |
| 2024 | Monday | Weekday |
| 2025 | Tuesday | Weekday |
| 2026 | Wednesday | Weekday |
| 2027 | Thursday | Weekday |
| 2028 | Saturday | Weekend |
| 2029 | Sunday | Weekend |
| 2030 | Monday | Weekday |
| 2031 | Tuesday | Weekday |
| 2032 | Thursday | Weekday |
| 2033 | Friday | Weekday |
| 2034 | Saturday | Weekend |
Why the weekday changes
A common year is 365 days, one day more than 52 weeks. So October 21 moves on one weekday each year: Wednesday in 2026, Thursday in 2027. The jump is two days when February 29 comes in between, so October 21, 2028 is a Saturday, two on from 2027's Thursday. Between 1901 and 2099, the whole pattern repeats every 28 years.
More about October 21 on this site
October 21 questions
What day of the week is October 21, 2027?
October 21, 2027 is a Thursday. It is day 294 of the year and falls in ISO week 42.
Is October 21 a holiday?
None of the holidays on this site is fixed to October 21. October 21, 2027 is not a US federal holiday. Some years it is Isra and Mi'raj instead, as in 2033.
Cite this page
APA: ClockTotals. (2026, October 29). What Day of the Week Is October 21? https://clocktotals.com/what-day-is/october-21/
MLA: “What Day of the Week Is October 21?” ClockTotals, 29 Oct. 2026, clocktotals.com/what-day-is/october-21/.
Link (HTML): <a href="https://clocktotals.com/what-day-is/october-21/">What Day of the Week Is October 21?</a>