On: Leap seconds: Causing bugs even when they don’t ha...

[adrianN]

I really hope that traffic enforcement systems don't use timers that know the date.

[debarshri → adrianN]

It is not just for timer, as part of evidence you also have to capture when that event occurred. There it does capture the date.

[q3k → debarshri]

You should record the event time separately [1] from the beginning/end of the measurement period - the first as a time instant in UTC ('wall clock'), the latter as a difference between two values of a guaranteed monotonically increasing clock.

This is something you need to do regardless of leap seconds to handle things like NTP kicking in to adjust your local wall clock time.

[1] - Depending on the programming environment, these might be either different timestamp types recorded separately or converted appropriately to reflect different uses, or a smart combination type like time.Time in Go.