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https://developers.google.com/time/smear

Relevant :

https://cloudplatform.googleblog.com/2016/11/making-every-le...

https://cloudplatform.googleblog.com/2015/05/Got-a-second-A-...

https://cloud.google.com/spanner/docs/true-time-external-con...

Would be interesting to use smearing for daylights saving time too. Make the hour twice as long when changing to winter and only take half the time when changing to summer.

In some scenarios handling DST might not be necessary then!

It wouldn't work for a tv schedule though, since what is broadcasted still uses actual time. ;)

> Spreading it out over some other period

Yes.

They make a second last slightly long for some time period.

Or shorter... Leap seconds can be negative.

Theoretically, yes, but it's never happened since leap seconds were established in 1972, and it seems very unlikely to happen for quite some time. Chances are that a lot of software doesn't actually support negative leap seconds at all.