Introduction to time zones & DST in popular countries

• Australia

  There are totally 5 time zones in Australia, including Australia Western Standard Time, Australia Central Western Standard Time, Australia Central Standard Time, Australia Eastern Standard Timeand Lord Howe Standard Time (LHST).

  Daylight Saving Time in Australia begins on the first Sunday in October, and ends on the first Sunday in April. Take 2017 as an example, DST in Australia ends on April 2nd, and begins on October 1st.

  It is worth nothing that, some of the states in Australia don't observe Daylight Saving Time, including Western Australia, Queensland, Northern Territory and Eucla, while the rest states of Australia do observe DST, including the Australian Capital Territory, New South Wales, South Australia, Tasmania and Victoria.

• Canada

  There are totally 6 time zones in Canada, most of which are similar with those in USA, including Eastern Standard Time、Central Standard Time、Mountain Standard Time、Pacific Standard Time. The other two are Atlantic Standard Time and Newfoundland Standard Time.

  Starting in 2007, Canada follows the new North American standard for Daylight Saving Time, which begins on the second Sunday in March, and ends on the first Sunday of November. Take 2017 as an example, Canada observes DST on March 12th, and ends on November 5th.

  It is worth noting that, some parts of Canada don't oberve Daylight Saving Time, including some areas of Québec, east of 63 degrees west longitude, most of Saskatchewan and Southampton Island.

• United States

  There are totally 9 time zones in United States, four in the mainland, one in Alaska, one in Howaii, and the other three in oversea territories.

  Four time zones in the mainland are: Eastern Standard Time、Central Standard Time、Mountain Standard Time、Pacific Standard Time

  Daylight Saving Time in United States begins on the second Sunday in March, and ends on the first Sunday of November. Take 2017 as an example, United States observes DST on March 12th, and ends on November 5th.

  It is worth nothing that, some parts of United States don't observe Daylight Saving Time, including most of Arizona except the Navajo Nation Community, Howaii, American Samoa, Guam, Puerto Rico and the U.S. Virgin Islands.