Day 11 of the year
The 11th day of 2026 is Sunday, January 11, 2026. It was 255 days ago.
Where day 11 lands in other years
The calendar date for a given day number moves only because of leap years. In a common year day 11 is one date; from 1 March in a leap year it shifts back by one.
| Year | Date | Weekday | Leap year |
|---|---|---|---|
| 2026 | January 11 | Sunday | no |
| 2027 | January 11 | Monday | no |
| 2028 | January 11 | Tuesday | yes |
| 2029 | January 11 | Thursday | no |
| 2030 | January 11 | Friday | no |
Day 11 in context
Day 11 sits in January, on the 11th of the month, in the first quarter. By that point 10 days of the year have already gone and the year is 3.0% complete.
| Anchor | Day number | Distance from day 11 |
|---|---|---|
| 1 January | 1 | 10 days before |
| 1 April | 91 | 80 days after |
| 1 July | 182 | 171 days after |
| 1 October | 274 | 263 days after |
| 31 December | 365 | 354 days after |
Counting to and from day 11
Ordinal day numbers make in-year arithmetic trivial: the gap between two dates in the same year is just the difference of their day numbers. Day 11 minus today's day 266 gives 255 days, with no month lengths to reason about. That is exactly why batch codes, expiry stamps and flight schedules use them.
Questions
- What date is day 11 of the year?
- Sunday, January 11, 2026.
- What weekday is it?
- A Sunday in 2026.
- How far away is it?
- 255 days ago.
Reading the number back
To go the other way, from a calendar date to a day number, add up the lengths of the months before it and then add the day of the month. For January 11 in 2026 that is 0 days across the earlier months plus 11, giving 11. The only wrinkle is February, which is why the same date can carry two different day numbers depending on whether the year is a leap year.