Day of Week & Leap Year Calculator
Find out what day of the week a date falls on and check leap year status.
How to Use This Calculator
1
Pick Any Date
Select a historic date or future date from the calendar selector.
2
Find Day Name
Instantly find out if that date falls on a Monday, Friday, Sunday, etc.
3
View Calendar Statistics
See the day of the year number, ISO week, quarter, and leap year validation.
Practical Examples
Indonesian Independence Day (17 Aug 1945)
17 August 1945
Friday (Day 229 of 1945)
Y2K New Year (1 Jan 2000)
1 January 2000
Saturday (Leap Year 2000)
Frequently Asked Questions
How do I check what day of the week I was born on?
Enter your date of birth in the date selector above to see the exact day of the week you were born.
What makes a year a leap year?
A year is a leap year if it is divisible by 4, except for end-of-century years which must be divisible by 400 (e.g., 2000 was a leap year, but 1900 was not).
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