Dealing with "leap seconds" is a complex thing.
For leap seconds for awhile see:
http://en.wikipedia.org/wiki/Leap_second

For most logging and reporting activities, leap seconds are of no consequence. One "day" is 86,400 seconds (24*60*60) seconds. There may or may not be a "leap second" in a given year. The Op's question was for one day ago.

No problem with strftime. It "works" albeit slower than other ways.

In reply to Re^3: Date Time problem. by Marshall
in thread Date Time problem. by Karger78

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