What day of the year is it?
The day of the year — also called the ordinal date — is a number from 1 to 365 (or 366 in a leap year) that tells you how far into the year a given date falls. January 1 is day 1, and December 31 is day 365 (or 366). Pick any date above to see its day number instantly, or use the reverse lookup to turn a day number back into a calendar date.
How the day of the year is calculated
The day number is simply the count of days from January 1 up to and including your chosen date. Because February has an extra day in a leap year, every date from March 1 onward shifts by one in leap years. This calculator handles leap years automatically, so the numbers are always correct.
Day of the year on the 1st of each month
- January 1 — day 1
- February 1 — day 32
- March 1 — day 60 (61 in a leap year)
- April 1 — day 91 (92)
- May 1 — day 121 (122)
- June 1 — day 152 (153)
- July 1 — day 182 (183)
- August 1 — day 213 (214)
- September 1 — day 244 (245)
- October 1 — day 274 (275)
- November 1 — day 305 (306)
- December 1 — day 335 (336)
Is this the Julian day?
Not quite. In everyday use, "Julian date" often means the day-of-year number shown here (e.g. day 100). Astronomers use a different Julian Day Number, a continuous count of days since 4713 BC. If you need that, see our Julian date tool.
Common uses
- Filling in ordinal-date fields on forms, spreadsheets, and lot or batch codes
- Working out how far through the year a date is
- Finding which date lands on day 100, day 200, or day 300 of the year
- Planning around the days remaining until year-end
