quarantine 'em

The shortest day was 31 January 1968. It ran for 86399.902592 seconds

During 31 January 1968, UTC ran 3 millionths of a percent (0.002592 seconds) slower than TAI. But we removed 0.1 seconds from the end

Correction, I meant to say "TAI ran 3 millionths of a percent faster than UTC" above. Both times. Figures are correct though

Here is the code I used to work out those year lengths https://gist.github.com/ferno/d92f218ab51bcecdd1075fa1e1fd07b6 …

And here is the code for those day lengths https://gist.github.com/ferno/ecfcf88206f984a5fa8bcb73d6d505f9 …

For reference, a typical 24-hour day runs for 24*60*60 = 86400 seconds, and a typical 365-day year runs for 86400*365 = 31536000 seconds

The basic problem here is that the planet Earth is a terrible clock

It spins too slowly, it spins at irregular rates, it is constantly slowing down, and it can never be wound