# std::chrono::leap_second

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< cpp‎ | chrono

Defined in header `<chrono>` |  |
class leap_second; |  | (since C++20)

The class `leap_second` represents the date and time of a leap second insertion.

Users cannot construct `leap_second` objects except by copying from existing `leap_second` objects. The library implementation creates `leap_second` objects when it initializes the time zone database and provides const access to these objects.

`leap_second` has a defaulted copy constructor and a defaulted copy assignment operator.

### Member functions

date | obtains the time of leap second insertion (public member function)

### Nonmember functions

operator==operator<operator<=operator>operator>=operator<=> (C++20) | compares two `leap_second` values or a `leap_second` value and a sys_time (function template)

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