Knowledge Explorer lesson

Reading a Calendar

How many days are in each month?

A calendar shows the days of one month. Each row is one week, and each column is one day of the week.

Most months have 30 or 31 days. February has 28 days, or 29 days in a leap year.

A helpful rhyme: "Thirty days has September, April, June, and November. All the rest have thirty-one, except February."

A date names the month, the day, and the year, like October 15, 2026. One week later is 7 days later, so it is in the same column, one row down.

What you will learn

Key facts

Open this interactive lesson

Browse all learning guides