Internet Assigned Numbers Authority owner of IANA time zone
Protocol assignments
Time zone database
The IANA time zone database holds the time zone differences and rules for the various regions of the world and allows this information to be mirrored and used by computers and other electronic devices to maintain proper configuration for timekeeping.
IANA assumed responsibility for the database on October 16, 2011, after the Astrolabe, Inc. v. Olson et al. decision caused the shutdown of the FTP server which had previously been the primary source of the database.