Australia uses three main time zones: AEST (UTC+10:00), ACST (UTC+09:30), and AWST (UTC+08:00). Standard time was introduced in 1895 after all colonies adopted it. Western Australia uses AWST, South Australia and NT use ACST. Cocos Islands use UTC+06:30, Christmas Island UTC+07:00, Norfolk Island UTC+11:00
Time zones are identified by their relationship to UTC (Universal Time). Time zones east of UTC are UTC+4, west of UTC are UTC-6. Crossing the Date Line causes 24-hour clock reversal
Time zones are areas observing uniform standard time for legal and commercial purposes. Time zones follow country boundaries rather than strict longitude. UTC offsets range from -12:00 to +14:00, with some zones using 30-45 minute increments
UTC stands for Coordinated Universal Time and serves as the global time standard. It was chosen as a compromise between CUT and TUC, which were both alternatives. UTC is based on the Prime Meridian and remains constant during daylight saving time
Time zones are based on Coordinated Universal Time (UTC) ranging from -12:00 to +14:00. UTC and GMT are interchangeable terms used for time division
USA phone numbers consist of 3-digit area code and 7-digit local number. Exit code needed for international calls, "00" for Europe, "010" for Japan. Country code "1" required for international calls from outside USA. Area code determines geographic location, multiple codes possible in cities