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Latest Sunrise in Decades

Because Daylight Savings Time (DST) has been pushed back to the first Sunday in November this year, most people in the United States are experiencing the chronographically latest sunrise time since the Uniform Time Act of 1966 was signed into law.

In Boston for example, sunrise for November 3rd occurs at 7:20am, which because of DST, is 7 minutes later than it will be at the time of the latest astronomical sunrise. This will occur a few days after the Winter Solstice, around December 31st, when in Boston, the sun will rise at 7:13am.

Sunrise

Boston Sunrise and Sunset for 2007

Prior to this year, DST started on the last Sunday in October, which put the latest sunrise almost exactly at the time it occurs after the Winter Solstice. I suspect in fact that is how the original date was decided upon in the first place.

» Posted: Friday, November 2, 2007 | Comments (1) | Permanent Link
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Comments

Very interesting graph. Time versus time.

Thanks.

» Posted by Jim Pohl on January 4, 2008 12:18 PM
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