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Sheldon Jacobson's commentary ("Dark days ahead — and changing clocks make it worse," Opinion Exchange, Nov. 2) is another example of what seems to be a recent litany of complaints: according to him, we are "tormented by time changes"! Somehow, changing this week from daylight saving time to standard time, and then back again in the spring, will be so difficult!
The reason for this simple change is obvious at our northern latitude, when days range in length from about 8.75 hours in December to over 15.5 hours in June. If we kept going all year with daylight time, at the December solstice, sunrise would be around 8:48 a.m. — thus quite dark until 9:30 a.m. Changing to standard time (with sunrise an hour earlier) makes the cold mornings a lot less forbidding. Furthermore, in the cold weather, we don't mind that sunset comes as early as 4:30 p.m. — we are not engaged as much in outdoor activity.
In spring, when the days lengthen, and we change back, daylight time makes our summer solstice sunset as late as 9:04 p.m., which is wonderful for outside activity in the warm weather. And sunrise at 5:27 a.m.? Well, the birds wake us up!
So — why is this change in time, by only one hour, and only twice a year, so challenging and such a hardship, and why does it cause so many plaintive objections? It simply makes sense (which might be why we've been doing it for decades). Why make a change when the existing system works just fine?
Philip Bradley, Minneapolis
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