Explore any calendar month

Choose a month and year to see its calendar, length, weekdays, weekend days and boundary weekdays.

Month calendar and facts

Building the calendar…

The month and year together determine the length and weekday layout. Read how a monthly calendar is generated.

February changes in leap years, while every month's weekday total depends on its alignment. See how many days are in a selected month and how weekdays in a month are counted.

The first and final weekdays matter for reporting and recurring schedules. Learn how to find a month's first and last day.

Build and read a calendar for any month and year.

Find whether a month contains 28, 29, 30 or 31 days.

Count Monday-through-Friday dates in a particular month.

Count Saturdays and Sundays for any selected month.

Find the boundary dates and weekdays of any calendar month.

Understand full weeks, partial weeks and calendar rows.