This project independently packages the timezone data required by ics.py.
It includes the Olson / IANA timezone Database converted to iCalender vTimezone files by vzic
and the Unicode CLDR mapping of Windows timezone names to the Olson identifiers.
Having a separate project from ics.py allows regular releases when the timezone data changes
(which is not as seldom as you might think) without having to do a new release of ics.py.
Similar to pytz, this project follows the YYYY.minor calendar versioning scheme representing the periodic updates of its data,
while ics.py uses semantic versioning to allow ensuring compatibility with its more gradually evolving code-base.
The source code of the project itself and the IANA time zone database are in the public domain, while the Unicode CLDR Windows timezone name mapping file is under the Unicode, inc. license agreement for data files and software, having the following copyright notice:
Copyright © 1991-2013 Unicode, Inc. CLDR data files are interpreted according to the LDML specification (http://unicode.org/reports/tr35/) For terms of use, see http://www.unicode.org/copyright.html