On Wed, 21 Dec 2022, Hal Murray via devel wrote:

Google says:
 https://developers.google.com/time/smear
 We encourage anyone smearing leap seconds to use a 24-hour linear smear from
noon to noon UTC.

There were earlier versions which did sine rather than linear.

Hmm. I don't recall any nonlinear version (and I presume you meant raised cosine rather than sine), but I do recall that Google's smear interval was originally 20 hours, not 24. If you make it 24 hours, there's the question of whether that means 86400 seconds or 86401. :-)

Fred Wright
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