Date & Time
Day of the Week
Enter any date to find out which day of the week it is.
Trouvez quel jour de la semaine correspond à une date
Fonctionnalités
Any Date
Works for past dates going back centuries and future dates.
Instant Result
Day of week appears the moment you enter a date.
Gregorian Calendar
Uses the standard Gregorian calendar.
Week Number
Also shows the ISO week number for the date.
How to Find the Day of Week
- Enter the date you want to check.
- The day of the week appears instantly.
- See the ISO week number as a bonus.
FAQ
What day was July 20, 1969 (Moon landing)?▾
It was a Sunday.
Does it work for very old dates?▾
Yes, for dates in the Gregorian calendar (post-1582). Pre-1582 dates use a proleptic Gregorian calculation.
Historical Days
- July 4, 1776 (US Independence): Thursday
- November 9, 1989 (Berlin Wall): Thursday
- January 1, 2000 (Y2K): Saturday
More Date & Time
Age Calculator by Birthday
Calculate your exact age in years, months, and days from your birthday
Days Between Dates Calculator
Find the exact number of days between any two dates
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates
World Timezone Converter
Convert times across different world timezones instantly
Business Days Calculator
Count business days between dates, excluding weekends and holidays
Date Format Converter
Convert dates between ISO, Unix, MM/DD/YYYY, and all formats
Countdown Timer
Live countdown to any target date and time
Time Duration Calculator
Add or subtract two time durations in hours, minutes, seconds
ISO Week Number Calculator
Find ISO week number, day of year, quarter, and leap year info
Stopwatch & Timer
Online stopwatch with lap times and a countdown timer — no install needed
Pomodoro Timer
Focus timer using the Pomodoro Technique. 25-min sessions with short and long breaks
Timezone Meeting Planner
Find the best meeting time across multiple time zones with overlap visualization
Date Add/Subtract
Add or subtract days, weeks, months, years from any date.
Meeting Time Planner
Plan meetings across multiple time zones with city-by-city local times.