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The administrator can select a time zone so that a user can view report data with time values that correspond to the user’s physical location.
Most time zone options are arranged into geographically related groups, such as Africa, America, Asia, Atlantic, Europe, and Pacific. Multiple options for “America” are available, including America/Cancun, America/Jamaica, America/New_York. All options let you assign a time zone based on the user’s proximity to a well-known city or country.
A group labeled Etc/ contains time zones that are not geographical in nature, but that instead indicate a position relative to the “zero hour.” For example, the group includes Etc/UTC, Etc/GMT, Etc/GMT-1, Etc/GMT+1, and so on. Use these options in the following situations:
The Etc/ options adhere to the POSIX standard, which uses positive values west of Greenwich, England. Many users expect to see positive time values east of Greenwich. For example, the Etc/GMT+4 option corresponds to four hours behind UTC (west of Greenwich) rather than four hours ahead of UTC (east of Greenwich).
Various well-known and common time zone designations are available, such as the following:
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