noun

A calendar is a special chart or tool that helps you keep track of days, weeks, and months. It usually has numbers and names on it that tell you what day it is today and what day it will be in the future.

Just like how you might use a map to find your way around a new place, you can use a calendar to help you plan your activities and know when important events, like holidays or birthdays, are coming up.

A calendar can also help you learn about different seasons and the changes that happen throughout the year, like when it's time to plant new flowers or when it starts to get darker earlier in the evening.

Example

1. I always mark important dates on my calendar so I don't forget them.
2. Sarah asked me to check my calendar to see if I was free on Friday.
3. My calendar shows that next month has 30 days.