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

[Brian Park via tz]

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.