'Create a time zone with a fixed offset corresponding to a time stamp in
the system\'s locally configured time zone.
@param timeStamp: a time stamp
@type timeStamp: L{int}
@return: a time zone
@rtype: L{FixedOffsetTimeZone}'

@classmethod
def fromLocalTimeStamp(cls, timeStamp):

    offset = (datetime.fromtimestamp(timeStamp) - datetime.utcfromtimestamp(timeStamp))
    return cls(offset)
