Saturday, October 31, 2009

How much extra evening daylight per year?

Some in Indiana who favor staying on eastern time are concerned that there would be no benefit from daylight saving time if Indiana were on central time instead.

This is not the case at all.

Currently, in Indianapolis, during the 238 days (7.8 months) per year of DST, there are about 105 minutes per day of daylight shifted from the morning to the evening. During the remaining 127 days (4.2 months) of "standard" time, there are still 45 minutes per day of daylight shifted from morning to evening.

Over the course of a year, Indianapolis "enjoys" an average of 84 minutes per day of daylight shifted from morning to evening.

How does this stack up with other locations around the country?

[Compared with other United States cities located in their geographically-correct time zone], there are virtually no other locations in the country that have as much morning daylight shifted to the evening as Indianapolis on eastern time.

Average minutes per day shifted from morning to evening

84, Indianapolis (eastern time)
40, Philadelphia (middle of eastern time zone)
40, St. Louis (middle of central time zone)
35, New York City
30, Chicago
26, Nashville TN
24, Indianapolis (if returned to central time)
23, Boston
20, Las Vegas
14, Bangor, Maine

{ Fri, 6 Nov 2009, 12:30 pm EST, slight addition for accuracy, see "[]" above }

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