An employer should make clear which parts of a contract are legally binding. Contract terms could be: 1  in a written contract, or similar document like a written statement of employment. 2  verbally agreed. 3  in an employee handbook or on a company notice board.
If you're speaking of Chicago, Illinois, then the entire state of Illinois is in the Central Time Zone, which is one hour behind the Eastern Time Zone. So if it is 6pm Eastern time, it is 5pm in Chicago.
This is appended to the time in the same way that 'Z' was above. The offset from UTC changes with daylight saving time, e.g. a time offset in Chicago, which is in the North American Central Time Zone, would be  â06:00  for the winter (Central Standard Time) and  â05:00  for the summer.