[vba616]

Yes, I'm wondering when/how "smearing" became widely accepted, since the Wikipedia page on leap seconds only says that there is a proprietary method that Google uses, and another that Amazon uses.

"UTC-SLS was proposed as a version of UTC with linear leap smearing, but it never became standard"

[sla29970]

Lack of agreement; "smearing" is completely normal for answering "What time is it?", and completely wrong for applications requiring precise time.