The United States and other some countries change their clocks two or more times a year to adjust for seasonal shifts in daylight hours. Use the following table to identify the Z command for timezones that observe daylight savings time rules.Z Commands for Daylight Savings Timezones
Zone | Standard | Daylight | Example |
Z28 | PST | PDT | L.A |
Z29 | MST | MDT | Denver |
Z30 | CST | CDT | Chicago |
Z31 | EST | EDT | New York |
Z32 | AST | ADT | |
Z33 | GMT | BST | London |
Z34 | Z34 | Z34S | Europe |
Z35 | Z35 | Z35S | Western Australia |
Z36 | Z36 | Z36S | Central Australia |
Z37 | Z37 | Z37S | Australia, Sydney |
Z38 | Z38 | Z38S | Paris |
Z39 | Z39 | Z39S | Amsterdam |
Z40 | USER | SMMR | customer defined |