std::chrono::year - cppreference.com

From cppreference.com

The class year represents a year in the proleptic Gregorian calendar. Its range is [-32767, 32767].

(constructor)	constructs a `year` (public member function) [edit]
operator++operator++(int)operator--operator--(int)	increments or decrements the year (public member function) [edit]
operator+=operator-=	adds or subtracts a number of years from a `year` (public member function) [edit]
operator+operator-	applies unary operators to `year` (public member function) [edit]
is_leap	determines if the year is a leap year (public member function) [edit]
operator int	retrieve the year value (public member function) [edit]
ok	checks if the stored year value is valid (public member function) [edit]
min [static]	returns the smallest possible year value (public static member function) [edit]
max [static]	returns the largest possible `year` (public static member function) [edit]

Defined in inline namespace `std::literals::chrono_literals`
	a std::chrono::year literal representing a particular year (function) [edit]