Full name: Gregorian year
Plural form: years
Alternate spelling: yrs
Category type: time
Scale factor: 31556952
The SI base unit for time is the second.
1 second is equal to 3.1688738506811E-8 year.
Valid units must be of the time type.
You can use this form to select from known units:
An average Gregorian year is 365.2425 days (52.1775 weeks, 8765.82 hours, 525949.2 minutes or 31556952 seconds). For this calendar, a common year is 365 days (8760 hours, 525600 minutes or 31536000 seconds), and a leap year is 366 days (8784 hours, 527040 minutes or 31622400 seconds). The 400-year cycle of the Gregorian calendar has 146097 days and hence exactly 20871 weeks.
ag = a_g = 365.2425 days for the mean Gregorian year