when logged on as root use the program "tz". That will give you the option of setting the location, offset from UCT, the names of the regular and summer time, and the starting date and time for both.
Because of the change in starting and ending time in the US you need to tell the program that you are not in the US, otherwise it tries to default to the standard dates in effect in 1999.
The separator for month, week, and day is a period.
Ed Fair
Give the wrong symptoms, get the wrong solutions.