I'm trying to parse a timestamp with Time::Piece, and then stringify the result back into the original date string.

The timestamp includes the zone. I can do it with Time::Local and it works as expected. But with Time::Piece, no matter what I seem to try, the result is displayed as GMT.

See this test:

#!/usr/bin/env perl

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

my $datestr = '2017-06-19 10:07:42-0700';
print "Original date string: $datestr\n\n";

print "Using Time::Local\n";
my $time = timelocal(42, 7, 10, 19, 6, 2017);
print "  Epoch seconds: $time\n";
print "  CORE::localtime: ", scalar CORE::localtime($time), "\n";
print "\n";

print "Using Time::Piece:\n";

print "  strptime as static method:\n";
my $obj = Time::Piece->strptime($datestr, '%Y-%m-%d %H:%M:%S%z');
print "     stringified: $obj\n";
print "     datetime: ", $obj->datetime, "\n";
print "     tzoffset: ", $obj->tzoffset, "\n";
print "     hour: ", $obj->hour, "\n";

print "  strptime as localtime instance method:\n";
$obj = localtime->strptime($datestr, '%Y-%m-%d %H:%M:%S%z');
print "     stringified: $obj\n";
print "     datetime: ", $obj->datetime, "\n";
print "     tzoffset: ", $obj->tzoffset, "\n";
print "     hour: ", $obj->hour, "\n";

print "  strptime as gmtime instance method:\n";
$obj = gmtime->strptime($datestr, '%Y-%m-%d %H:%M:%S%z');
print "     stringified: $obj\n";
print "     datetime: ", $obj->datetime, "\n";
print "     tzoffset: ", $obj->tzoffset, "\n";
print "     hour: ", $obj->hour, "\n";
[download]

For me, that produces:

Original date string: 2017-06-19 10:07:42-0700

Using Time::Local
  Epoch seconds: 1500484062
  CORE::localtime: Wed Jul 19 10:07:42 2017

Using Time::Piece:
  strptime as static method:
     stringified: Mon Jun 19 17:07:42 2017
     datetime: 2017-06-19T17:07:42
     tzoffset: 0
     hour: 17
  strptime as localtime instance method:
     stringified: Mon Jun 19 17:07:42 2017
     datetime: 2017-06-19T17:07:42
     tzoffset: -25200
     hour: 17
  strptime as gmtime instance method:
     stringified: Mon Jun 19 17:07:42 2017
     datetime: 2017-06-19T17:07:42
     tzoffset: 0
     hour: 17
[download]

The CORE::localtime result is what I want. But how do I get that back out of the Time::Piece instances?

I'm using the latest Time::Piece, 1.31

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.