I had to recreate an account just to reply to this discussion because I'm so appalled by its content. At the time of me writing this, 99% of the comment here ar

I had to recreate an account just to reply to this discussion because I'm so appalled by its content. At the time of me writing this, 99% of the comment here are complaining about UTC moving to keep track of solar time or smugly arguing that we shouldn't do that. Different time standards exist. International Atomic Time (TAI) is a strictly monotic clock based on the average of multiple atomic clocks throughout the world. UTC is defined as a tweaking of TAI to approximate UT1, a rough definition of which would be the historic mean solar time at longitude 0. UTC shifts TAI to be within one second of UT1. That's both its definition and the whole point of it even exising. I repeat, it UTC didn't track solar time, it would have no reason whatsoever to even exist. If you want TAI, just use that. Stop complaining that UTC is not it.