What Day of the Week Is October 31?
October 31, 2026 falls on a Saturday.
It is day 304 of 2026, and 61 days of the year come after it. The date sits in ISO week 44 and in the fourth quarter, October to December. North of the equator it is day 40 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 Tuesday, November 24, 2026. It is not a US federal holiday.
October 31 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 | Friday | Saturday | Sunday | Tuesday |
| Day of the year | 304 of 365 | 304 of 365 | 304 of 365 | 305 of 366 |
| Days left in the year | 61 | 61 | 61 | 61 |
| ISO week | 44 | 44 | 43 | 44 |
| Quarter | Q4 | Q4 | Q4 | Q4 |
| Season (north) | Day 40 of fall | Day 40 of fall | Day 39 of fall | Day 40 of fall |
| Moon (US Eastern) | Waxing gibbous | Waning gibbous | Waxing crescent | Waxing gibbous |
| US federal holiday | No | No | No | No |
| Other holidays | Halloween, Reformation Day | Halloween, Reformation Day | Halloween, Reformation Day | Halloween, Reformation Day |
Holidays on October 31
Every year, October 31 is Halloween and Reformation Day.
Holidays that move with the calendar land on October 31 in some years from 2026 to 2035.
| Holiday or observance | Years on October 31 |
|---|---|
| October Bank Holiday (Ireland) | 2033 |
Born on October 31
In most horoscope tables, October 31 falls under Scorpio, the sign that runs from October 23 to November 21.
The birthstone for October is the opal, and the American Gem Society also lists tourmaline.
October 31 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 31, 1990 arrived on a Wednesday, and one born on October 31, 2000 on a Tuesday. Weekends are shaded.
| Years | …0 | …1 | …2 | …3 | …4 | …5 | …6 | …7 | …8 | …9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1950s | Tue | Wed | Fri | Sat | Sun | Mon | Wed | Thu | Fri | Sat |
| 1960s | Mon | Tue | Wed | Thu | Sat | Sun | Mon | Tue | Thu | Fri |
| 1970s | Sat | Sun | Tue | Wed | Thu | Fri | Sun | Mon | Tue | Wed |
| 1980s | Fri | Sat | Sun | Mon | Wed | Thu | Fri | Sat | Mon | Tue |
| 1990s | Wed | Thu | Sat | Sun | Mon | Tue | Thu | Fri | Sat | Sun |
| 2000s | Tue | Wed | Thu | Fri | Sun | Mon | Tue | Wed | Fri | Sat |
| 2010s | Sun | Mon | Wed | Thu | Fri | Sat | Mon | Tue | Wed | Thu |
| 2020s | Sat | Sun | Mon | Tue | Thu | Fri | Sat | Sun | Tue | Wed |
| 2030s | Thu | Fri | Sun | Mon | Tue | Wed | Fri | Sat | Sun | Mon |
| 2040s | Wed | Thu | Fri | Sat | Mon | Tue | Wed | Thu | Sat | Sun |
When October 31 is on the same weekday again
After 2026, October 31 is next a Saturday in 2037.
| Day of the week | Next year after 2026 |
|---|---|
| Monday | 2033 |
| Tuesday | 2028 |
| Wednesday | 2029 |
| Thursday | 2030 |
| Friday | 2031 |
| Saturday | 2037 |
| Sunday | 2027 |
October 31 by year
| Year | Day of the week | Weekend or weekday |
|---|---|---|
| 2023 | Tuesday | Weekday |
| 2024 | Thursday | Weekday |
| 2025 | Friday | Weekday |
| 2026 | Saturday | Weekend |
| 2027 | Sunday | Weekend |
| 2028 | Tuesday | Weekday |
| 2029 | Wednesday | Weekday |
| 2030 | Thursday | Weekday |
| 2031 | Friday | Weekday |
| 2032 | Sunday | Weekend |
| 2033 | Monday | Weekday |
| 2034 | Tuesday | Weekday |
Why the weekday changes
A common year is 365 days, one day more than 52 weeks. So October 31 moves on one weekday each year: Saturday in 2026, Sunday in 2027. The jump is two days when February 29 comes in between, so October 31, 2028 is a Tuesday, two on from 2027's Sunday. Between 1901 and 2099, the whole pattern repeats every 28 years.
More about October 31 on this site
October 31 questions
What day of the week is October 31, 2026?
October 31, 2026 is a Saturday. It is day 304 of the year and falls in ISO week 44.
Is October 31 a holiday?
Every year, October 31 is Halloween and Reformation Day. October 31, 2026 is not a US federal holiday.
Cite this page
APA: ClockTotals. (2026, October 18). What Day of the Week Is October 31? https://clocktotals.com/what-day-is/october-31/
MLA: “What Day of the Week Is October 31?” ClockTotals, 18 Oct. 2026, clocktotals.com/what-day-is/october-31/.
Link (HTML): <a href="https://clocktotals.com/what-day-is/october-31/">What Day of the Week Is October 31?</a>