std::chrono::year::max (3) - Linux Manuals
std::chrono::year::max: std::chrono::year::max
NAME
std::chrono::year::max - std::chrono::year::max
Synopsis
static constexpr year max() noexcept; (since C++20)
Returns the largest possible year, that is, std::chrono::year(32767).
Return value
std::chrono::year(32767)