Provided by: biber_2.9-1_all 

NAME
Biber::Date::Format
Description
Implements EDTF Levels 0 and 1 and also allows detection of
missing month/year.
https://www.loc.gov/standards/datetime/pre-submission.html
AUTHORS
Francois Charette, "<firmicus at ankabut.net>" Philip Kime "<philip at kime.org.uk>"
BUGS
Please report any bugs or feature requests on our Github tracker at
<https://github.com/plk/biber/issues>.
COPYRIGHT & LICENSE
Copyright 2009-2017 Francois Charette and Philip Kime, all rights reserved.
This module is free software. You can redistribute it and/or modify it under the terms of the Artistic
License 2.0.
This program is distributed in the hope that it will be useful, but without any warranty; without even
the implied warranty of merchantability or fitness for a particular purpose.
perl v5.26.1 2017-11-28 Biber::Date::Format(3pm)