UTC−11:00 is an identifier for a time offset from UTC of −11:00. This time is used in Niue, American Samoa, Swains Island, and parts of the United States
UTC+11:00 is an identifier for a time offset from UTC of +11:00. This time is used in: Principal cities: Nouméa, Magadan, Yuzhno-Sakhalinsk, Honiara, Port
UTC+11:30 is an identifier for a time offset from UTC of +11:30. This time zone has been used as standard time in New Zealand and Norfolk Island, but is
the programme commences at 12:00 GMT. GMT aired three times a day (09:00-09:30 GMT, 11:00-11:30 GMT and 12:00-13:00 GMT) each Monday through Friday on BBC
introduction of Unix Time on January 1, 1970. In those days before 1970, the GMT (Greenwich Mean Time) was the term being used. "eCFR :: 49 CFR 71.12 - -