Issue
Explain the difference between the I/A Series R2 timezone settings like CST vs CST6CDT, or PST vs PST8PDT and the Americas/City time zones.
Each of the following examples shows the three different ways that the four American time zones can be specified:
America/New York or EST or EST5EDT
America/Chicago or CST or CST6CDT
America/Denver or MST or MST7MDT
America/Los_Angeles or PST or PST8PDT
Environment
I/A Series R2 UNCs and Enterprise Servers
Cause
Various ways to specify the location in terms of the time zone and the daylight savings start/end dates.
Resolution
Each of the following three entries specify the same part of the United States and the usual daylight savings time dates (2:00 AM on the second Sunday of March through 2:00 AM on the first Sunday of November)
America/New York or EST or EST5EDT
America/Chicago or CST or CST6CDT
America/Denver or MST or MST7MDT
America/Los_Angeles or PST or PST8PDT
For parts of the Unites States that do not observe daylight savings time or have different daylight savings time rules, specify the appropriate "America/City" selection, for example:
America/Indianapolis for those parts of the state of Indiana that are in the Eastern Time Zone.
America/Phoenix is used for the entire state of Arizona, which does not observe any daylight savings time.
To specify a time zone where no daylight savings time is observed, you would select the appropriate entry from the entries that begin with Etc/GMT+xx or Etc/GMT-xx where xx specifies the hours from GMT or UTC (Coordinated Universal Time).
