Find a day’s ordinal number in the year (1–365 or 366) and how many days remain until year-end.
Enter the date
1 January is day 1. Leap years have 366 days, others 365.
Precise calendar calculations. Everything is computed instantly in your browser, no account, no data sent. Leap years and Gregorian calendar rules are handled.
The day of year is found by counting the days from 1 January (day 1) to the chosen date. Leap years have 366 days, others 365:
9 July 2026 is day 190 of 365 — 175 days remain. 31 December is day 365 (366 in a leap year).
Enter the date and get its ordinal number in the year, from 1 (1 January) to 365 or 366. For example, 9 July 2026 is day 190.
365 days in an ordinary year and 366 in a leap year (with 29 February). 2026 has 365 days, 2028 has 366.
The result also shows the days remaining = total days in the year − current day. On 9 July 2026, 175 days remain.
After 29 February, in a leap year every date has an ordinal one higher than in an ordinary year. So 31 December is day 365 normally and day 366 in a leap year.
In common use, the “day of year” (ordinal date) is the day’s number within that year (1–366). It should not be confused with the astronomical Julian date.
The calculator also shows the weekday, the ISO week number and whether the year is a leap year, besides the day of year.
Agriculture, meteorology, astronomy, logistics and computer systems that number days (the ordinal YYYY-DDD format).
31 December is day 365 in an ordinary year and day 366 in a leap year.