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DateTime::Format zef:raku-community-modules last updated on 2022-02-25



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Provides strftime(), strptime() (coming soon), and a few predetermined formats for use with both.

It also comes with some localizations for month and day names.

Convenience subroutines

These are exported by use DateTime::Format

strftime (Str $format, DateTime $dt, :$lang, :$subseconds)

Format the DateTime object using the format as specified in the string.

If you don't specify the language, it uses the currently set default.

If you want to specify the use of subseconds in the time display, set the subseconds argument to the precision you wish to use in significant digits. Setting subseconds to 'True' would be equivalent of using a subseconds value of 1.

For example: using a subseconds value of 3 would format 33.3145692 seconds as 33.315

strptime (Str $timestamp, Str $format, :$lang)

Parse the string using the format as specified in the second string.

If you don't specify the language, it uses the currently set default.

set-datetime-format-lang (Str $code)

Set the default language to use. This can be 'en' (the default language), or any language you have added using one of the Localization libraries.



Parse or Stringify a DateTime in the RFC 2822 format.

my $ts = 'Tue, 30 Apr 2013 13:02:10 -0700';
my $rfc =;
my $dt  = $rfc.parse($ts);
my $dt2 = $dt.utc();
say ~$dt2;                   ## Tue, 30 Apr 2013 20:02:10 +0000


The default localization is English, using the code 'en'. There is no loadable module for English, since it's strings are included by default in the DateTime::Format module.

The following are additional libraries that can add localizations to the DateTime::Format library. The languages will then be immediately usable.

use DateTime::Format::Lang::FR;

## You can also specify the :lang<fr> parameter to the
## strftime(), strptime() subroutines, or the parse() and format()
## methods within a DateTime::Format::* subclass such as RFC2822.
## This overrides the language for a single call, rather than setting
## a default value.



Anyone missing that may have contributed, feel free to create an issue to add you to the credits.


Copyright 2013 - 2018 Timothy Totten

Copyright 2019 - 2022 Raku Community

This library is free software; you can redistribute it and/or modify it under the Artistic License 2.0.