1 ICU uses the public domain data and code derived from Time Zone 2Database for its time zone support. The ownership of the TZ database 3is explained in BCP 175: Procedure for Maintaining the Time Zone 4Database section 7. 5 6 # 7. Database Ownership 7 # 8 # The TZ database itself is not an IETF Contribution or an IETF 9 # document. Rather it is a pre-existing and regularly updated work 10 # that is in the public domain, and is intended to remain in the 11 # public domain. Therefore, BCPs 78 [RFC5378] and 79 [RFC3979] do 12 # not apply to the TZ Database or contributions that individuals make 13 # to it. Should any claims be made and substantiated against the TZ 14 # Database, the organization that is providing the IANA 15 # Considerations defined in this RFC, under the memorandum of 16 # understanding with the IETF, currently ICANN, may act in accordance 17 # with all competent court orders. No ownership claims will be made 18 # by ICANN or the IETF Trust on the database or the code. Any person 19 # making a contribution to the database or code waives all rights to 20 # future claims in that contribution or in the TZ Database. 21