NAME Date::Format::ISO8601 - Format date (Unix timestamp) as ISO8601 datetime/date/time string VERSION This document describes version 0.012 of Date::Format::ISO8601 (from Perl distribution Date-Format-ISO8601), released on 2022-07-23. 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. Keywords: epoch, Unix time 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 . SOURCE Source repository is at . SEE ALSO DateTime::Format::ISO8601::Format DateTime::Format::ISO8601 Time::Piece (which is a core module) has a "datetime()" method that can output ISO8601 datetime string. AUTHOR perlancar CONTRIBUTING To contribute, you can send patches by email/via RT, or send pull requests on GitHub. Most of the time, you don't need to build the distribution yourself. You can simply modify the code, then test via: % prove -l If you want to build the distribution (e.g. to try to install it locally on your system), you can install Dist::Zilla, Dist::Zilla::PluginBundle::Author::PERLANCAR, and sometimes one or two other Dist::Zilla plugin and/or Pod::Weaver::Plugin. Any additional steps required beyond that are considered a bug and can be reported to me. COPYRIGHT AND LICENSE This software is copyright (c) 2022, 2020 by perlancar . This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. BUGS Please report any bugs or feature requests on the bugtracker website 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.