What Day of the Week Is January 31?
January 31, 2027 falls on a Sunday. This year, January 31, 2026 was a Saturday.
It is day 31 of 2027, and 334 days of the year come after it. The date sits in ISO week 4 and in the first quarter, January to March. North of the equator it is day 42 of winter, and spring starts on March 20. In Australia and the rest of the south, it is summer. The Moon is a waning crescent that day, and the next full moon is on Saturday, February 20, 2027. It is not a US federal holiday.
January 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 | Monday |
| Day of the year | 31 of 365 | 31 of 365 | 31 of 365 | 31 of 366 |
| Days left in the year | 334 | 334 | 334 | 335 |
| ISO week | 5 | 5 | 4 | 5 |
| Quarter | Q1 | Q1 | Q1 | Q1 |
| Season (north) | Day 42 of winter | Day 42 of winter | Day 42 of winter | Day 42 of winter |
| Moon (US Eastern) | Waxing crescent | Waxing gibbous | Waning crescent | Waxing crescent |
| US federal holiday | No | No | No | No |
| Other holidays | – | – | – | Auckland Anniversary Day, Vasant Panchami |
Holidays on January 31
None of the 245 holidays and observances on this site is fixed to January 31.
Holidays that move with the calendar land on January 31 in some years from 2026 to 2035.
| Holiday or observance | Years on January 31 |
|---|---|
| Lunar New Year | 2033 |
| Auckland Anniversary Day | 2028, 2033 |
| Tu BiShvat | 2029 |
| Vasant Panchami | 2028 |
| Seollal | 2033 |
Born on January 31
In most horoscope tables, January 31 falls under Aquarius, the sign that runs from January 20 to February 18.
The birthstone for January is the garnet on the American Gem Society list.
January 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 January 31, 1990 arrived on a Wednesday, and one born on January 31, 2000 on a Monday. Weekends are shaded.
| Years | …0 | …1 | …2 | …3 | …4 | …5 | …6 | …7 | …8 | …9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1950s | Tue | Wed | Thu | Sat | Sun | Mon | Tue | Thu | Fri | Sat |
| 1960s | Sun | Tue | Wed | Thu | Fri | Sun | Mon | Tue | Wed | Fri |
| 1970s | Sat | Sun | Mon | Wed | Thu | Fri | Sat | Mon | Tue | Wed |
| 1980s | Thu | Sat | Sun | Mon | Tue | Thu | Fri | Sat | Sun | Tue |
| 1990s | Wed | Thu | Fri | Sun | Mon | Tue | Wed | Fri | Sat | Sun |
| 2000s | Mon | Wed | Thu | Fri | Sat | Mon | Tue | Wed | Thu | Sat |
| 2010s | Sun | Mon | Tue | Thu | Fri | Sat | Sun | Tue | Wed | Thu |
| 2020s | Fri | Sun | Mon | Tue | Wed | Fri | Sat | Sun | Mon | Wed |
| 2030s | Thu | Fri | Sat | Mon | Tue | Wed | Thu | Sat | Sun | Mon |
| 2040s | Tue | Thu | Fri | Sat | Sun | Tue | Wed | Thu | Fri | Sun |
When January 31 is on the same weekday again
After 2027, January 31 is next a Sunday in 2038.
| Day of the week | Next year after 2027 |
|---|---|
| Monday | 2028 |
| Tuesday | 2034 |
| Wednesday | 2029 |
| Thursday | 2030 |
| Friday | 2031 |
| Saturday | 2032 |
| Sunday | 2038 |
January 31 by year
| Year | Day of the week | Weekend or weekday |
|---|---|---|
| 2023 | Tuesday | Weekday |
| 2024 | Wednesday | Weekday |
| 2025 | Friday | Weekday |
| 2026 | Saturday | Weekend |
| 2027 | Sunday | Weekend |
| 2028 | Monday | Weekday |
| 2029 | Wednesday | Weekday |
| 2030 | Thursday | Weekday |
| 2031 | Friday | Weekday |
| 2032 | Saturday | Weekend |
| 2033 | Monday | Weekday |
| 2034 | Tuesday | Weekday |
Why the weekday changes
A common year is 365 days, one day more than 52 weeks. So January 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 January 31, 2029 is a Wednesday, two on from 2028's Monday. Between 1901 and 2099, the whole pattern repeats every 28 years.
More about January 31 on this site
January 31 questions
What day of the week is January 31, 2027?
January 31, 2027 is a Sunday. It is day 31 of the year and falls in ISO week 4.
Is January 31 a holiday?
None of the holidays on this site is fixed to January 31. January 31, 2027 is not a US federal holiday. Some years it is Lunar New Year instead, as in 2033.
Cite this page
APA: ClockTotals. (2026, November 2). What Day of the Week Is January 31? https://clocktotals.com/what-day-is/january-31/
MLA: “What Day of the Week Is January 31?” ClockTotals, 2 Nov. 2026, clocktotals.com/what-day-is/january-31/.
Link (HTML): <a href="https://clocktotals.com/what-day-is/january-31/">What Day of the Week Is January 31?</a>