NAME

NAME
Date::Format::ISO8601 - Format date (Unix timestamp/epoch) as ISO8601
date/time string

VERSION
This document describes version 0.010 of Date::Format::ISO8601 (from
Perl distribution Date-Format-ISO8601), released on 2020-10-22.

SYNOPSIS
use Date::Format::ISO8601 qw(
gmtime_to_iso8601_date
gmtime_to_iso8601_time
gmtime_to_iso8601_datetime

localtime_to_iso8601_date
localtime_to_iso8601_time
localtime_to_iso8601_datetime
);

my $timestamp = 1529780523 ; # Sat Jun 23 19:02:03 2018 GMT
my $timestamp_frac = 1529780523.456; # Sat Jun 23 19:02:03 2018 GMT

Assuming local timezone is UTC+7.

Formatting dates:

say gmtime_to_iso8601_date ($timestamp); # => 2018-06-23
say localtime_to_iso8601_date($timestamp); # => 2018-06-24

Formatting times:

say gmtime_to_iso8601_time ($timestamp); # => 19:02:03Z
say gmtime_to_iso8601_time ({tz=>''}, $timestamp); # => 19:02:03
say gmtime_to_iso8601_time ({second_precision=>3}, $timestamp_frac);
# => 19:02:03.456Z
say localtime_to_iso8601_time($timestamp); # => 00:02:03
say localtime_to_iso8601_time({tz=>'+07:00'}, $timestamp);
# => 00:02:03+07:00

Formatting date+time:

say gmtime_to_iso8601_datetime ($timestamp); # => 2018-06-23T19:02:03Z
say gmtime_to_iso8601_datetime ({tz=>''}, $timestamp);
# => 2018-06-23T19:02:03
say gmtime_to_iso8601_datetime ({second_precision=>3}, $timestamp_frac);
# => 2018-06-23T19:02:03.456Z
say localtime_to_iso8601_datetime($timestamp); # => 2018-06-24T00:02:03
say localtime_to_iso8601_datetime({tz=>'+07:00'}, $timestamp);
# => 2018-06-24T00:02:03+07:00

DESCRIPTION
This module formats Unix timestamps (epochs) as ISO8601 date/time
strings. It is a lightweight alternative to
DateTime::Format::ISO8601::Format and DateTime::Format::ISO8601.

FUNCTIONS
gmtime_to_iso8601_date
Usage:

my $str = gmtime_to_iso8601_date([ \%opts, ] $timestamp);

Options:

* tz

String. Will be appended after the time portion.

* date_sep

String. Default is colon ("-").

* time_sep

String. Default is colon (":").

* second_precision

Integer. Number of digits for fractional second. Default is undef
(precision as needed).

gmtime_to_iso8601_time
See Synopsis and "gmtime_to_iso8601_date" for syntax and options.

gmtime_to_iso8601_datetime
See Synopsis and "gmtime_to_iso8601_date" for syntax and options.

localtime_to_iso8601_date
See Synopsis and "gmtime_to_iso8601_date" for syntax and options.

localtime_to_iso8601_time
See Synopsis and "gmtime_to_iso8601_date" for syntax and options.

localtime_to_iso8601_datetime
See Synopsis and "gmtime_to_iso8601_date" for syntax and options.

HOMEPAGE
Please visit the project's homepage at
<https://metacpan.org/release/Date-Format-ISO8601>.

SOURCE
Source repository is at
<https://github.com/perlancar/perl-Date-Format-ISO8601>.

BUGS
Please report any bugs or feature requests on the bugtracker website
<https://rt.cpan.org/Public/Dist/Display.html?Name=Date-Format-ISO8601>

When submitting a bug or request, please include a test-file or a patch
to an existing test-file that illustrates the bug or desired feature.

SEE ALSO
DateTime::Format::ISO8601::Format

DateTime::Format::ISO8601

AUTHOR
perlancar <[email protected]>

COPYRIGHT AND LICENSE
This software is copyright (c) 2020 by [email protected].

This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.