Toolstia / Day of the week calculator
Day of the week calculator
Pick any date, past or future, and see which day of the week it falls on. You also get the day of the year, the days left in the year, the ISO week number, the quarter and whether it is a leap year. A second tool finds dates such as the first Monday of September or the last Friday of a month.
Find a date such as the fourth Thursday of November
How it works
- Choose a date.
- Read the weekday and the calendar facts.
- Use the second tool to find the nth weekday of a month.
Calendar used
Dates use the Gregorian calendar, extended backwards to year 1 (the proleptic Gregorian calendar). Before the calendar was adopted in different countries, historical records may show different dates.
Leap years
A year is a leap year if it is divisible by 4, except years divisible by 100 that are not divisible by 400. So 2000 and 2024 are leap years while 1900 and 2100 are not.
Nth weekday of a month
Many holidays and events are defined this way, such as the fourth Thursday of November. Choose First to Fifth or Last, a weekday, a month and a year.
Day of the year
January 1 is day 1 and December 31 is day 365 or 366. This ordinal number is used in some date formats and in planning.
Questions
What day of the week was I born?
Choose your birth date and read the weekday.
Does it work for future dates?
Yes, for any date from year 1 to 9999.
Is anything uploaded?
No. The conversion happens in your browser and nothing is sent anywhere.