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I've just said 'fuck it' and switched all my clocks to UTC. I don't even care anymore.
Why not metric time(TAI)?
Or why not just seconds past the epoch?
leap second corrected or not?
Metric seconds or UTC seconds?
I'm gonna say SI
Reasons just states difference, but does not answer why.
There's literally a section titled 'why use UTC - not TAI?'.
On the other hand, TAI does not take into account the variations in Earth's rotation speed, which determines the true length of a day. For this reason, UTC is constantly compared to UT1. Before the difference between the two scales reaches 0.9 seconds, a leap second is added to UTC.
On average, Earth has been slowing down a bit over the past decades, so UTC is currently running 37 seconds behind TAI.
So leap seconds is advantage here?
Is that supported in any common operating systems?
Yes, CLOCK_TAI here