[tz] Re: How permanent daylight saving time or permanent standard time would affect the USA

One thing rarely mentioned in these discussions is the millions of electronic devices (e.g. timers, clocks, watches, thermostats, etc) which are hardcoded to handle DST using the current US/Canada rules (i.e. first Sunday in Nov, second Sunday in Mar). If the DST rules are changed, those devices will become obsolete because the firmware for those things will never be updated. I own maybe 10-15 of such devices, and I would be annoyed to throw away those items which are otherwise working perfectly fine.