What date is day 291 of 2025?

October 18, 2025

Saturday

Day 291 of 365 in 2025

Day numbers by month, 2025

Month	First day number	Last day number
January	1	31
February	32	59
March	60	90
April	91	120
May	121	151
June	152	181
July	182	212
August	213	243
September	244	273
October	274	304
November	305	334
December	335	365

Key figures

October 18, 2025date

Saturdayweekday

291day of the year

74days left after it

W42ISO week

Q4quarter

79.7%of the year elapsed

Commonyear type

The answer

Day 291 of 2025 is Saturday, October 18, 2025. 2025 is an ordinary year with 365 days, so this date is 74 days before the end of the year. It sits in ISO week 42, in quarter 4, and is 349 days ago.

How the day number is found

Day numbers count from January 1, which is day 1. January has 31 days, so February 1 is day 32; in a common year March 1 is day 60, and in a leap year it is day 61 because February has 29 days. The table above lists the first and last day number of every month in 2025, so you can check any result by hand.

Ordinal dates in practice

Day-of-year numbers, sometimes called ordinal or Julian dates, are used in logistics, military and aviation records, satellite data, manufacturing lot codes and food packaging. The format YYYY-DDD, for example 2025-291, is part of the ISO 8601 standard. Note that the ‘Julian date’ used by astronomers is a different system.

Checking your answer

Take the last day number of the month before and add the day of the month: the previous month ends on day 273, and 18 more days gets you to day 291.

Today's date at a glance

Today is Friday, October 2, 2026. That is day 275 of 365 in 2026, in ISO week 40, with 90 days to go before the year ends. The next dates people plan around are Diwali on Saturday, October 10; Columbus Day on Monday, October 12; Halloween on Saturday, October 31. The moon is a Waning Gibbous tonight, with about 66% of its face lit. All of these figures are recalculated when the page loads, so they always describe the day you open it, not the day the page was published.

How the calendar works

The Gregorian calendar has twelve months of 28 to 31 days. A normal year has 365 days and a leap year has 366, with the extra day added to February in every year divisible by four except century years that are not divisible by 400. Because 365 is one more than 52 weeks, most dates move forward one weekday each year and two after a leap day. Weeks are numbered under ISO 8601, which starts weeks on Monday and gives week 1 to the week containing the first Thursday of January.