What Day of the Week Is January 21?
January 21, 2027 falls on a Thursday. This year, January 21, 2026 was a Wednesday.
It is day 21 of 2027, and 344 days of the year come after it. The date sits in ISO week 3 and in the first quarter, January to March. North of the equator it is day 32 of winter, and spring starts on March 20. In Australia and the rest of the south, it is summer. The Moon is a waxing gibbous that day, and the next full moon is on Friday, January 22, 2027. It is not a US federal holiday.
January 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 | Friday |
| Day of the year | 21 of 365 | 21 of 365 | 21 of 365 | 21 of 366 |
| Days left in the year | 344 | 344 | 344 | 345 |
| ISO week | 4 | 4 | 3 | 3 |
| Quarter | Q1 | Q1 | Q1 | Q1 |
| Season (north) | Day 32 of winter | Day 32 of winter | Day 32 of winter | Day 32 of winter |
| Moon (US Eastern) | Last quarter | Waxing crescent | Waxing gibbous | Waning crescent |
| US federal holiday | No | No | No | No |
| Other holidays | – | – | – | – |
Holidays on January 21
None of the 245 holidays and observances on this site is fixed to January 21.
Holidays that move with the calendar land on January 21 in some years from 2026 to 2035.
| Holiday or observance | Years on January 21 |
|---|---|
| Martin Luther King Jr. Day | 2030 |
| Wellington Anniversary Day | 2030 |
| Laylat al-Qadr | 2031 |
Born on January 21
In most horoscope tables, January 21 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 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 January 21, 1990 arrived on a Sunday, and one born on January 21, 2000 on a Friday. Weekends are shaded.
| Years | …0 | …1 | …2 | …3 | …4 | …5 | …6 | …7 | …8 | …9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1950s | Sat | Sun | Mon | Wed | Thu | Fri | Sat | Mon | Tue | Wed |
| 1960s | Thu | Sat | Sun | Mon | Tue | Thu | Fri | Sat | Sun | Tue |
| 1970s | Wed | Thu | Fri | Sun | Mon | Tue | Wed | Fri | Sat | Sun |
| 1980s | Mon | Wed | Thu | Fri | Sat | Mon | Tue | Wed | Thu | Sat |
| 1990s | Sun | Mon | Tue | Thu | Fri | Sat | Sun | Tue | Wed | Thu |
| 2000s | Fri | Sun | Mon | Tue | Wed | Fri | Sat | Sun | Mon | Wed |
| 2010s | Thu | Fri | Sat | Mon | Tue | Wed | Thu | Sat | Sun | Mon |
| 2020s | Tue | Thu | Fri | Sat | Sun | Tue | Wed | Thu | Fri | Sun |
| 2030s | Mon | Tue | Wed | Fri | Sat | Sun | Mon | Wed | Thu | Fri |
| 2040s | Sat | Mon | Tue | Wed | Thu | Sat | Sun | Mon | Tue | Thu |
When January 21 is on the same weekday again
After 2027, January 21 is next a Thursday in 2038. The next weekend January 21 is in 2029, on a Sunday.
| Day of the week | Next year after 2027 |
|---|---|
| Monday | 2030 |
| Tuesday | 2031 |
| Wednesday | 2032 |
| Thursday | 2038 |
| Friday | 2028 |
| Saturday | 2034 |
| Sunday | 2029 |
January 21 by year
| Year | Day of the week | Weekend or weekday |
|---|---|---|
| 2023 | Saturday | Weekend |
| 2024 | Sunday | Weekend |
| 2025 | Tuesday | Weekday |
| 2026 | Wednesday | Weekday |
| 2027 | Thursday | Weekday |
| 2028 | Friday | Weekday |
| 2029 | Sunday | Weekend |
| 2030 | Monday | Weekday |
| 2031 | Tuesday | Weekday |
| 2032 | Wednesday | Weekday |
| 2033 | Friday | Weekday |
| 2034 | Saturday | Weekend |
Why the weekday changes
A common year is 365 days, one day more than 52 weeks. So January 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 January 21, 2029 is a Sunday, two on from 2028's Friday. Between 1901 and 2099, the whole pattern repeats every 28 years.
More about January 21 on this site
January 21 questions
What day of the week is January 21, 2027?
January 21, 2027 is a Thursday. It is day 21 of the year and falls in ISO week 3.
Is January 21 a holiday?
None of the holidays on this site is fixed to January 21. January 21, 2027 is not a US federal holiday. Some years it is Martin Luther King Jr. Day instead, as in 2030.
Cite this page
APA: ClockTotals. (2026, November 1). What Day of the Week Is January 21? https://clocktotals.com/what-day-is/january-21/
MLA: “What Day of the Week Is January 21?” ClockTotals, 1 Nov. 2026, clocktotals.com/what-day-is/january-21/.
Link (HTML): <a href="https://clocktotals.com/what-day-is/january-21/">What Day of the Week Is January 21?</a>