$ perl -MTime::Piece -le 'print Time::Piece->strptime( "2015-04-28T11:33:12", "%Y-%m-%dT%H:%M:%S" )'
Tue Apr 28 11:33:12 2015
$ perl -MTime::Piece -le 'print Time::Piece->strptime( "2015-04-28T11:33:12", "%Y-%m-%dT%T" )'
Tue Apr 28 11:33:12 2015
$ perl -MTime::Piece -le 'print Time::Piece->strptime( "2015-04-28T11:33:12", "%FT%H:%M:%S" )'
Error parsing time ...

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