What date is day 245 of 2029?

September 2, 2029

Sunday

Day 245 of 365 in 2029

Day numbers by month, 2029

MonthFirst day numberLast day number
January131
February3259
March6090
April91120
May121151
June152181
July182212
August213243
September244273
October274304
November305334
December335365

Key figures

September 2, 2029date
Sundayweekday
245day of the year
120days left after it
W35ISO week
Q3quarter
67.1%of the year elapsed
Commonyear type

The answer

Day 245 of 2029 is Sunday, September 2, 2029. 2029 is an ordinary year with 365 days, so this date is 120 days before the end of the year. It sits in ISO week 35, in quarter 3, and is 1063 days from today.

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 2029, 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 2029-245, 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 243, and 2 more days gets you to day 245.

Frequently asked questions

What date is day 245 of 2029?

Sunday, September 2, 2029.

What day of the week is day 245 of 2029?

Sunday.

Is 2029 a leap year?

No, it has 365 days.

How many days are left in 2029 after day 245?

120.

What ISO week is day 245 in?

Week 35 of 2029.

Which quarter is it in?

Quarter 3.

What percentage of 2029 has passed by day 245?

67.1%.

What is day 1 of 2029?

Monday, January 1, 2029.

RESULT & PLANNING

Use this calculation

Day 245 of 2029: September 2, 2029 Sunday — Day 245 of 365 in 2029

How this calculation was worked out

The result uses the exact inputs on this page and calendar/time arithmetic appropriate to this calculator. The result shown above is the value to use for this calculation.

Working days and weekends

1063Calendar days
759Weekdays
152Saturdays
152Sundays
Not included unless this calculator says otherwisePublic holidays

Practical planning milestones

  1. Calculated dateSunday, September 2, 2029

Excel / Google Sheets formula

=DATE(A2,1,B2)

Put the year in A2 and day number in B2.

Accuracy and limitations

  • The result uses the calendar rules and time zone shown on this page.
  • Leap years and actual month lengths are handled by the calendar arithmetic where they affect the calculation.

Save or share this result

Calculation history

Machine-readable result
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