What Day of the Year Is It? — Current Day Number

What day of the year is it today?

Today is day 261 of 2026. That means 261 days have passed since January 1, and 104 days remain before 2026 ends. In UTC, today is Sep 18, 2026 (Fri).

How the day of the year is calculated

The day-of-year number is simply the count of days from the start of the year to the date in question, inclusive of the start date. January 1 is day 1. If today is January 10, the day number is 10. By December 31 of a common year, the number reaches 365; in a leap year it reaches 366. The calculation above uses the UTC calendar date so the result is stable for an international audience.

Leap years and day numbers

A leap year adds February 29, which shifts every day number after February by one. In a leap year, March 1 is day 61 instead of day 60, and the year ends on day 366 rather than day 365. The rule for the Gregorian calendar is: a year is a leap year if it is divisible by 4, except years divisible by 100 are not leap years unless they are also divisible by 400. That is why 2024 was a leap year, 2025 is not, 2026 is not, and 2028 will be.

• 2024 — leap year, 366 days, day 366 = December 31, 2024.
• 2025 — common year, 365 days, day 365 = December 31, 2025.
• 2026 — common year, 365 days, day 365 = December 31, 2026.
• 2028 — leap year, 366 days, day 366 = December 31, 2028.

Why use UTC for the day number

The day number belongs to a calendar date, and a calendar date can be different on either side of midnight. If it is 23:00 on December 31 in Tokyo, it is already January 1 in New York, so the day number differs by 364 or 365 between those two places at the same instant. For that reason, this page reports the UTC date's day number — a single, unambiguous value that does not depend on where the reader is.

Day numbers and Unix time

A day number answers "which day of the year is this date?" while Unix time answers "how many seconds since 1970?" — and the two convert cleanly. Paste an epoch value into the free online epoch time converter and the date it names appears instantly; read the month and day off that date and you have the day number for any instant. To go the other way, the date to epoch converter turns a calendar date back into a Unix timestamp.

Where the day-of-year number shows up

Day-of-year numbers are used in a lot of places, even when you do not notice them:

• Progress tracking — "we are 60% through the year" is really a day-number question.
• Reporting and planning — fiscal or project timelines are sometimes expressed as day numbers.
• Logs and data exports — some systems record a day-of-year field alongside a timestamp.
• Science and astronomy — the ordinal day is a compact way to name a date without a month.

If you just need to know "what day of the year is it" right now, the cards above already have the answer. For the full table — every day of a given year with its day number, date, and week number — use the links below.

Full day-number tables by year

Each year has its own page listing every day with its day number, the calendar date, and the ISO week number. Pick the year you need:

• Day numbers for 2024 (leap year, 366 days)
• Day numbers for 2025 (common year, 365 days)
• Day numbers for 2026 (common year, 365 days)
• Day numbers for 2027 (common year, 365 days)
• Day numbers for 2028 (leap year, 366 days)

Day of the year vs week number

The day-of-year number counts days from January 1. The week number counts weeks from the start of the year under ISO 8601 — week 1 is the week containing the first Thursday. A date's day number and its week number are related but not the same: day 1 is not always in week 1, and a year can have 52 or 53 weeks. Use the current week number page when you need the week, and this page when you need the day.

Example day numbers

• January 1, 2026 → day 1 of 2026 (Monday).
• February 1, 2026 → day 32 of 2026 (Sunday).
• March 1, 2026 → day 60 of 2026 (Sunday), because 2026 is not a leap year.
• June 1, 2026 → day 152 of 2026 (Monday).
• Today (Sep 18, 2026 (Fri)) → day 261 of 2026.