Day 264 of the year
The 264th day of 2026 is Monday, September 21, 2026. It was 2 days ago.
Where day 264 lands in other years
The calendar date for a given day number moves only because of leap years. In a common year day 264 is one date; from 1 March in a leap year it shifts back by one.
| Year | Date | Weekday | Leap year |
|---|---|---|---|
| 2026 | September 21 | Monday | no |
| 2027 | September 21 | Tuesday | no |
| 2028 | September 20 | Wednesday | yes |
| 2029 | September 21 | Friday | no |
| 2030 | September 21 | Saturday | no |
Day 264 in context
Day 264 sits in September, on the 21st of the month, in the third quarter. By that point 263 days of the year have already gone and the year is 72.3% complete.
| Anchor | Day number | Distance from day 264 |
|---|---|---|
| 1 January | 1 | 263 days before |
| 1 April | 91 | 173 days before |
| 1 July | 182 | 82 days before |
| 1 October | 274 | 10 days after |
| 31 December | 365 | 101 days after |
Counting to and from day 264
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 264 minus today's day 266 gives 2 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 264 of the year?
- Monday, September 21, 2026.
- What weekday is it?
- A Monday in 2026.
- How far away is it?
- 2 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 September 21 in 2026 that is 243 days across the earlier months plus 21, giving 264. 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.