Fast access to the system clock.
The day of the epoch of
SystemTime is time returned by system clock functions. Its semantics depends on the clock function, but the epoch is typically the beginning of 1970. Note that
systemNanoseconds of 1E9 to 2E9-1 can be used to represent leap seconds.
Defined in Data.Time.Clock.Internal.SystemTime
Map leap-second values to the start of the following second. The resulting
systemNanoseconds will always be in the range 0 to 1E9-1.
Get the system time, epoch start of 1970 UTC, leap-seconds ignored.
getSystemTime is typically much faster than
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