January 21, 2027 falls on a Thursday
January 21, 2027 is a Thursday. It is 119 days from today, September 24, 2026. The date is day 21 of 365 in 2027, it sits in ISO week 3, and it is the 21st of a 31-day month with 10 days after it.
What day of the week is January 21?
In 2027 it is a Thursday. The weekday is not a property of the date itself, it is a property of the date in a given year, so the honest answer always names the year. A common year is 365 days, which is 52 weeks plus one spare day, so a fixed date moves forward one weekday from one year to the next. A leap year inserts a second spare day, so the step is two whenever 29 February falls inside the gap. That is why January 21 works its way around the week rather than repeating on a tidy schedule.
January 21 in the next few years
| Year | Weekday | Day of year | ISO week | Leap year |
|---|---|---|---|---|
| 2026 | Wednesday | 21 | 4 | no |
| 2027 | Thursday | 21 | 3 | no |
| 2028 | Friday | 21 | 3 | yes |
| 2029 | Sunday | 21 | 3 | no |
| 2030 | Monday | 21 | 4 | no |
| 2031 | Tuesday | 21 | 4 | no |
| 2032 | Wednesday | 21 | 4 | yes |
| 2033 | Friday | 21 | 3 | no |
Between 2026 and 2027 the weekday moves from Wednesday to Thursday, a step of 1. The day-of-year column never moves for this date, because January 21 comes before 29 February and so is untouched by the leap day.
How often does January 21 fall at a weekend?
Counting the 28 occurrences from 2027 to 2054, January 21 lands on a Saturday 4 times and on a Sunday 4 times, so 8 of those 28 years put it at a weekend. Over a full 28-year stretch the Gregorian calendar repeats itself, and a fixed date visits each weekday four times, so the long-run answer is two weekend years in every seven.
Where January 21 sits in the calendar
January 21 is the 21st day of January, a month of 31 days in 2027, leaving 10 days of the month after it. Measured from 1 January it is 20 days into the year, and 344 days remain to 31 December, which puts it 5.8% of the way through 2027. In January 2027 the other Thursdays are the 7th, 14th, 28th, because weekdays repeat every seven days inside a month just as they do across one.
What else happens around January 21?
| Date | Occasion | Type | Days from January 21 |
|---|---|---|---|
| January 18 | Martin Luther King Jr. Day | federal holiday | 3 before |
What day was January 21 in a past year?
The table above looks forward. Going back, January 21 fell on a different weekday in each earlier year, and each of those has its own page.
How far away is January 21?
The next January 21 is Thursday, January 21, 2027, 119 days from today. That is 17 whole weeks and 0 days, or 17.0 weeks written as a decimal. To count towards it second by second, use the date calculator.
Questions
- What day of the week is January 21, 2027?
- A Thursday. It is day 21 of 365 and falls in ISO week 3.
- What day of the week is January 21 next year?
- In 2027 it is a Thursday.
- What number day of the year is January 21?
- Day 21 in a common year, the same in a leap year. See day 21 for more.
- Which week of the year is January 21 in?
- ISO week 3 in 2027. The week 3 page lists every date in it.
Nearby dates
The 21st of other months
All 366 dates · Week 3 · Day 21 of the year · Event countdowns · When is it? · Date calculator