Use this free day of the week calculator to find out which day any date falls on, such as the day you were born or the day of a future event. It opens on today, so it also tells you what day it is today, the day of the year and the week number. Tables show what day it will be in 7, 14 or 28 days, the date of next Friday, what day the 26th is, and how many Fridays are in the year. It is free and instant, and your date stays in your browser.
How to find the day of the week for any date
Pick a date and press Find the Day. The calculator tells you which day of the week it falls on, for any year from 1900 to 2200. It uses the real calendar, so leap years and the different lengths of months are taken care of. You also see the day of the year, the week number, the quarter, and how far the date is from today.
4 July 2026 is a SaturdayIt is day 185 of 365, and it falls in ISO week 27.
What day is it today?
The calculator opens on today’s date, taken from your own device, so the answer to “what day is it” is the first thing you see. The Today at a Glance box beside it also gives the day of the year, the week number and tomorrow’s date. Use the Yesterday and Tomorrow buttons to move a day, or the Today button to come back.
How is the weekday worked out?
The days of the week repeat in a cycle of 7. If you know the weekday of one date, you can count the days from it to any other date and take away whole weeks. What is left tells you how many days to move along the week. The calculator does exactly that, counting real calendar days between your date and a fixed starting date.
9,681 days = 1,383 weeks and 0 daysThere are exactly 1,383 whole weeks between the two dates and nothing left over, so 4 July 2026 is also a Saturday.
What is the first day of the week?
There is no single answer, because calendars differ. Most US calendars and planners show Sunday first. The international standard ISO 8601, and many countries in Europe, put Monday first. In both cases Monday to Friday are the weekdays and Saturday and Sunday are the weekend. This matters for week numbers: the ISO week starts on Monday, and week 1 is the week with the first Thursday of the year.
Day of the year and week numbers
The day of the year counts from 1 January, which is day 1. 31 December is day 365, or day 366 in a leap year. A leap year is a year that divides by 4, except years that divide by 100 but not by 400, so 2000 and 2024 were leap years but 1900 and 2100 are not. The Day of the Year Reference table lists the first and last day number of each month. Near the new year a date can belong to a week of the neighbouring year, and the calculator shows that year in brackets.
How many Fridays are in a year?
A normal year has 365 days, which is 52 weeks and 1 extra day. That extra day is the weekday of 1 January, so that weekday appears 53 times and every other weekday 52 times. A leap year has 366 days, so two weekdays appear 53 times: the weekday of 1 January and the one after it. The table on this page shows the counts for the current year and how many are still to come. Every year also has at least one Friday the 13th and at most three.
Next Friday, last Friday and what day is the 26th
“Next Friday” is used in two ways in everyday speech. On this page it always means the first Friday after today, and “last Friday” means the most recent one before today. The What Day Is the 26th? table shows the weekday of common dates of the month for this month and the next.
When is it useful?
Checking what day your birthday falls on next year, which weekday a booking, deadline or event lands on, or what day of the week you or someone else was born. To count the days between two dates use the Day Counter, to add days or months to a date use the Date Calculator, and to skip weekends and holidays use the Business Days Calculator. The Week Number Calculator shows the dates of any week.
