It's caused by rapid travel across time zones.

Jet lag is a mismatch between your body clock and the local time wherever you are. If you travel has time zone complexities or possible impacts on your health or comfort, consult an expert as you plan it. If starting the reverse course by midday, you may well arrive but a few clock hours more or less on the same calendar day.Starting a 12–15 hour flight from the North America to East or Southeast Asia in late evening can land you there in the morning two calendar days later.Crossing the International Date Line can cause confusion about on what date you'll arrive, e.g.,:.You may miss important obligations simply by not understanding what will be the correct local time as you travel.Your 'body clock' may experience some stress as you 'tell' it to meet business appointments, tours and other obligations perhaps a few or several hours different from the hours you normally rest.You need to take some care when planning trips that span time zones, e.g.,: (Note: The total span of time zones covers more than 24 hours because the Date Line jogs westward and eastward to keep certain national island groupings on the same calendar day, although they are not within a single time zone.) Crossing the Date Line going eastward, clocks are turned back a full 24 hours, and vice versa in the opposite direction. UTC+4) zones west of UTC and east of the Date Line are specified by the number of hours behind UTC (e.g. Time zones east of UTC and west of the International Date Line are specified by the number of hours ahead of UTC (e.g.

It comes from the nautical system in which each time zone was assigned a letter. The 'Z' is for 'zero', and 'Zulu' is the two-way radio pronunciation of 'Z'. UTC is also sometimes called Z or Zulu time. UTC used to be called GMT (Greenwich Mean Time), after the Royal Observatory located in the Greenwich area of London. or a U.S.This is a list of countries, regions, and territories grouped by time zone.Īlthough many time zones have descriptive names used by people in them, they are least ambiguously identified by their relationship to UTC (Universal Time, Co-ordinated). If you're using TRICARE For Life in the U.S.Our regional and other contractor partners provide health care services for each TRICARE health plan, pharmacy and dental benefits.Pacific Area Guam, Japan, Korea, Asia, Australia, New Zealand, India and Western Pacific remote countries. Latin America and Canada Area Central and South America, the Caribbean Basin, Canada, Puerto Rico and the Virgin Islands. This includes Baltic States, Ukraine, Georgia, Kazakhstan, Kyrgyzstan and Uzbekistan. Louis area), New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas (excluding El Paso area), Vermont, Virginia, West Virginia, and Wisconsin.Įurasia-Africa Area European and African continents, all Middle Eastern countries, Pakistan, Russia and several former Soviet Republics. Louis area), Montana, Nebraska, Nevada, New Mexico, North Dakota, Oregon, South Dakota, Texas (southwestern corner including El Paso), Utah, Washington and Wyoming.Įast Region Alabama, Arkansas, Connecticut, Delaware, the District of Columbia, Florida, Georgia, Illinois, Indiana, Iowa (Rock Island area), Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Mississippi, Missouri (St. West Region Alaska, Arizona, California, Colorado, Hawaii, Idaho, Iowa (excludes Rock Island arsenal area), Kansas, Minnesota, Missouri (except St. See the chart below for contact information. Each region has its own regional contractor.TRICARE is available worldwide and managed in three separate regions.

Wisconsin time zone to connecticut