calendar · noun C /ˈkæl.ən.dər/
calendar (DAYS)
A2 a list that shows all the days, weeks and months of the year
Dictionary examples:
a calendar for the year 2022
I think my birthday is on a Saturday - I'll check the calendar.
Learner example:
I got a calendar from Jul[ie], a candle from Peter, a book from Robert and a birthday cake from my parents. (Key English Test; A2; Slovak)
calendar (APPOINTMENTS)
B2 a book or other list with spaces for each day of the year in which to write down appointments, meetings, etc.
Dictionary example:
OK, I put that in my calendar - dinner at seven on the twenty-third.
Learner example:
I have looked in my calendar to see what time would be the best for you to come here. (First Certificate in English; B2; Danish)