27 Time library [time]

27.1 General [time.general]

This Clause describes the chrono library ([time.syn]) and various C functions ([ctime.syn]) that provide generally useful time utilities, as summarized in Table 94.
Table 94: Time library summary   [tab:time.summary]
Subclause
Header
Cpp17Clock requirements
Time-related traits
<chrono>
Class template duration
Class template time_­point
Clocks
Civil calendar
Class template hh_­mm_­ss
12/24 hour functions
Time zones
Formatting
Parsing
C library time utilities
<ctime>
Let STATICALLY-WIDEN<charT>("...") be "..." if charT is char and L"..." if charT is wchar_­t.