Definition
Year
A year is a calendar unit made of 12 months and 365 or 366 days.
What it means
A year moves through all 12 month names once. Most years have 365 days, but a leap year adds 29 February and has 366 days.
Remember it
One full trip through the 12 month names makes one year.
Example
A library card is valid from 1 September 2026 to 1 September 2027. That is one year, and this interval lasts 365 days.
Watch for
A year is not always exactly 365 days. Leap years have 366 days, and the months inside a year have different lengths.
Common mix-up
One year means 12 calendar months, but its exact day count can be 365 or 366.
Exact meaning
A year is a calendar unit made of 12 months. In the Gregorian calendar, a common year has 365 days and a leap year has 366.