Day 101 of the year
The 101st day of 2026 is Saturday, April 11, 2026. It was 165 days ago.
Where day 101 lands in other years
The calendar date for a given day number moves only because of leap years. In a common year day 101 is one date; from 1 March in a leap year it shifts back by one.
| Year | Date | Weekday | Leap year |
|---|---|---|---|
| 2026 | April 11 | Saturday | no |
| 2027 | April 11 | Sunday | no |
| 2028 | April 10 | Monday | yes |
| 2029 | April 11 | Wednesday | no |
| 2030 | April 11 | Thursday | no |
Day 101 in context
Day 101 sits in April, on the 11th of the month, in the second quarter. By that point 100 days of the year have already gone and the year is 27.7% complete.
| Anchor | Day number | Distance from day 101 |
|---|---|---|
| 1 January | 1 | 100 days before |
| 1 April | 91 | 10 days before |
| 1 July | 182 | 81 days after |
| 1 October | 274 | 173 days after |
| 31 December | 365 | 264 days after |
Counting to and from day 101
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 101 minus today's day 266 gives 165 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 101 of the year?
- Saturday, April 11, 2026.
- What weekday is it?
- A Saturday in 2026.
- How far away is it?
- 165 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 April 11 in 2026 that is 90 days across the earlier months plus 11, giving 101. 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.