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$ date "+%Y-%m-%dT%H:%M:%S%z" 2011-02-10T01:13:07-0800 ... $ perl -MTime::Piece -le"print Time::Piece->localtime->strftime(q!%Y-% +m-%dT%H:%M:%S%z!);" 2011-02-10T01:13:41PST
#!/usr/bin/perl -- ... 2011-02-10 09:25:08+0000 2011-02-10 01:25:08-0800 2011-02-10 17:25:08+0800