At 10:49 -0500 on 06/15/2015, Paul Gilmartin wrote about Re: STCK question:

I'll grant that I hijacked the topic by introducing the legal consequences
of calendar dates.  But "well under a year" is irrelevant.  Adding a mere
60 seconds to 2008-12-31 23:59:00 should give a date in 2008, not in
2009.

There a leap second at the end of December 31, 2008 and thus the last minute was 61 seconds long yielding 2008-12-31 23:59:60.

WARNING - We will encounter another long minute on June 30, 2015 since there is going to be another leap second then.

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