Const
The UTC time when the offset shall be applied.
The UTC time when the offset shall stop being applied. Providing a null value here indicates a permanent DST change. If this value is non-null the value shall be larger than the ValidStarting time.
The DST offset in seconds. Normally this is in the range of 0 to 3600 seconds (1 hour), but this field will accept any values in the int32 range to accommodate potential future legislation that does not fit with these assumptions.