calendar year
The time interval between 1 January and 31 December, inclusive, in the Gregorian calendar.
The number of days in the calendar year varies from 365 in ordinary years to 366 in leap years.
The time interval between 1 January and 31 December, inclusive, in the Gregorian calendar.
The number of days in the calendar year varies from 365 in ordinary years to 366 in leap years.