#!/usr/bin/env perl

use strict;
use warnings;
use Time::Local;
use Time::Piece;

$ENV{'TZ'} = 'America/Los_Angeles';

my $datestr = '2017-06-19 10:07:42';

my $gmt   = Time::Piece->strptime($datestr, '%Y-%m-%d %H:%M:%S');
my $local = localtime($gmt->epoch);

print "gmt epoch: ", $gmt->epoch, "\n",
      "local epoch: ", $local->epoch, "\n",
      "datestr: $datestr\n",
      "T::P gmt strftime: ", $gmt->strftime, "\n",
      "T::P local strftime: ", $local->strftime, "\n"
;