1 Week = 7 Days

A week has seven days:

Day of the Week In 3 Letters
Monday Mon
Tuesday Tue
Wednesday Wed
Thursday Thu
Friday Fri
Saturday Sat
Sunday Sun

Weekdays Ongoing  

But it doesn't have to be Monday to Sunday ...

... a week can be any period of 7 days.

Example: Wednesday, Thursday, Friday, Saturday, Sunday, Monday and Tuesday together make one week.

It could also go from one time to the same time 7 days later:

Example: From Midday on Thursday to Midday the next Thursday is also one week.

This calendar highlights one week (click on any day, a whole week is shown):

Weekdays and Weekend


A weekday is one of the days when people normally go to work or school. In most English-speaking countries the weekdays are:

Monday, Tuesday, Wednesday, Thursday and Friday.

The weekend is the days at the end of the week that are not weekdays. In most English-speaking countries the weekend is:

Saturday and Sunday.

Weeks in a Month

How many weeks in a Month?

Well, Months have different lengths:

  • If the Month has 30 Days, then it has 4 Weeks and 2 Days.
  • If the Month has 31 Days, then it has 4 Weeks and 3 Days.
  • February has exactly 4 weeks, except in a Leap Year it has 4 weeks and 1 Day.

In general you can say:

A Month is about 4 1/3 weeks

Weeks in a Year

  • A normal year has 365 days, which is 52 Weeks and 1 Day.
  • A leap year has 366 days, which is 52 Weeks and 2 Days.