What day of the year is it?
Day 307
of 365 in 2026 58 days left Ordinal date 2026-307 YYDDD 26307
Day number of any date, and back
Day-number chart
| Month | Common year | Leap year |
|---|---|---|
| January | 001–031 | 001–031 |
| February | 032–059 | 032–060 |
| March | 060–090 | 061–091 |
| April | 091–120 | 092–121 |
| May | 121–151 | 122–152 |
| June | 152–181 | 153–182 |
| July | 182–212 | 183–213 |
| August | 213–243 | 214–244 |
| September | 244–273 | 245–274 |
| October | 274–304 | 275–305 |
| November | 305–334 | 306–335 |
| December | 335–365 | 336–366 |
To find a day number, take the number of the 1st of the month from the chart and add the day of the month minus one. March 15 is 060 + 14 = day 074 in a common year and day 075 in a leap year.
The two columns agree for January and February. From March 1 on, every leap-year day number is one higher, because February 29 is day 060. That is the most common mistake with day numbers: a table printed for one year is wrong for the next if only one of them is a leap year. The 2026 day-number calendar prints every day of a year with its number.
Day numbers are usually written with three digits (001 to 365 or 366), so that YYDDD codes keep a fixed width and sort correctly.
Ordinal dates and “Julian” dates
The day of the year is a running count from 1 on January 1 to 365 on December 31, or 366 in a leap year. ISO 8601 calls a date written this way an ordinal date and writes it as the year, a hyphen and three digits: 2026-306 is November 2, 2026. Because it needs no month, it is compact and easy to compute with: the difference between two day numbers of the same year is the number of days between the dates.
Many industries call the same count a “Julian date”. NOAA’s glossary notes that some scientists use “julian day” for the day number within the year, counted from 1 on January 1. The US Department of Defense builds the document numbers of property turned in for disposal from, among other parts, the last digit of the year and a three-digit “Julian date”, the day of the year (32 CFR 273.7). Cartons of USDA-graded shell eggs carry a lot number that is the consecutive day of the year on which the eggs were packed, unless USDA has approved another numbering system; a carton marked 132 was packed on May 12 in a common year, or May 11 in a leap year (7 CFR 56.37).
Not the astronomers’ Julian Date
Astronomers use Julian Date for something else: a continuous count of days since noon on January 1, 4713 BC in the Julian calendar, with no reset at New Year. On November 2, 2026 at noon UTC it is 2,461,347.0. Neither count has anything to do with the Julian calendar of Julius Caesar, apart from the name. If a form asks for a “Julian date” and expects five digits, it wants YYDDD; if it expects a number in the millions, it wants the astronomical Julian Date.
Time zones
The day number changes at midnight, so it depends on where you are: for a few hours each day, Tokyo is already on the next day number while New York is still on the previous one. The number at the top of this page is for your device’s time zone and changes at your midnight.