Global libx52_set_clock (libx52_device *x52, time_t time, int local): Offsets are not computed correctly if setting the clock to local time, and local time is not standard time. E.g. local time is Pacific Daylight Time (UTC-07:00), but the offsets are computed using the local timezone as Pacific Standard Time (UTC-08:00).

Workaround: Set primary clock to GMT, and use offsets in secondary and tertiary clocks.