The zoneinfo.zip archive contains time zone files compiled using

the code and data maintained as part of the IANA Time Zone Database.

The IANA asserts that the database is in the public domain.

For more information, see

https://www.iana.org/time-zones

ftp://ftp.iana.org/tz/code/tz-link.html

https://datatracker.ietf.org/doc/html/rfc6557

To rebuild the archive, read and run update.bash.