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Equilvalent Daylight Days
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Just for fun, I've compiled a table that shows which days of the year have the same amount of daylight. For example, what day of the year has the same amount of daylight as July 17? To do this I've made some assumptions: for one, I've assumed that June 21(summer solstice) is the longest day of the year and December 21 (winter solstice) is the shortest. While that is the definition of a solstice, it could be off a bit depending on your latitude. And therefore the table is not accurate everywhere. I've included February 29 to keep the table even; therefore, the dates differ somewhat each year. Finally, realize that the dates are the same in the southern hemisphere, but the solstices are opposite.
Why did I do this? Because I thought that the results might be somewhat surprising to those of you not fluent in earth science, and I just love spreading my knowledge around. So here it goes...
| Summer/Fall Date |
Winter/Spring Date |
| June 21 |
June 21 |
| June 22 |
June 20 |
| June 23 |
June 19 |
| June 24 |
June 18 |
| June 25 |
June 17 |
| June 26 |
June 16 |
| June 27 |
June 15 |
| June 28 |
June 14 |
|
June 29 |
June 13 |
| June 30 |
June 12 |
| July 1 |
June 11 |
| July 2 |
June 10 |
| July 3 |
June 9 |
| July 4 |
June 8 |
| July 5 |
June 7 |
| July 6 |
June 6 |
| July 7 |
June 5 |
| July 8 |
June 4 |
| July 9 |
June 3 |
| July 10 |
June 2 |
| July 11 |
June 1 |
| July 12 |
May 31 |
| July 13 |
May 30 |
| July 14 |
May 29 |
| July 15 |
May 28 |
| July 16 |
May 27 |
| July 17 |
May 26 |
| July 18 |
May 25 |
| July 19 |
May 24 |
| July 20 |
May 23 |
| July 21 |
May 22 |
| July 22 |
May 21 |
| July 23 |
May 20 |
| July 24 |
May 19 |
| July 25 |
May 18 |
| July 26 |
May 17 |
| July 27 |
May 16 |
| July 28 |
May 15 |
| July 29 |
May 14 |
| July 30 |
May 13 |
| July 31 |
May 12 |
| August 1 |
May 11 |
| August 2 |
May 10 |
| August 3 |
May 9 |
| August 4 |
May 8 |
| August 5 |
May 7 |
| August 6 |
May 6 |
| August 7 |
May 5 |
| August 8 |
May 4 |
| August 9 |
May 3 |
| August 10 |
May 2 |
| August 11 |
May 1 |
| August 12 |
April 30 |
| August 13 |
April 29 |
| August 14 |
April 28 |
| August 15 |
April 27 |
| August 16 |
April 26 |
| August 17 |
April 25 |
| August 18 |
April 24 |
| August 19 |
April 23 |
| August 20 |
April 22 |
| August 21 |
April 21 |
| August 22 |
April 20 |
| August 23 |
April 19 |
| August 24 |
April 18 |
| August 25 |
April 17 |
| August 26 |
April 16 |
| August 27 |
April 15 |
| August 28 |
April 14 |
| August 29 |
April 13 |
| August 30 |
April 12 |
| August 31 |
April 11 |
| September 1 |
April 10 |
| September 2 |
April 9 |
| September 3 |
April 8 |
| September 4 |
April 7 |
| September 5 |
April 6 |
| September 6 |
April 5 |
| September 7 |
April 4 |
| September 8 |
April 3 |
| September 9 |
April 2 |
| September 10 |
April 1 |
| September 11 |
March 31 |
| September 12 |
March 30 |
| September 13 |
March 29 |
| September 14 |
March 28 |
| September 15 |
March 27 |
| September 16 |
March 26 |
| September 17 |
March 25 |
| September 18 |
March 24 |
| September 19 |
March 23 |
| September 20 |
March 22 |
| September 21 |
March 21 |
| September 22 |
March 20 |
| September 23 |
March 19 |
| September 24 |
March 18 |
| September 25 |
March 17 |
| September 26 |
March 16 |
| September 27 |
March 15 |
| September 28 |
March 14 |
| September 29 |
March 13 |
| September 30 |
March 12 |
| October 1 |
March 11 |
| October 2 |
March 10 |
| October 3 |
March 9 |
| October 4 |
March 8 |
| October 5 |
March 7 |
| October 6 |
March 6 |
| October 7 |
March 5 |
| October 8 |
March 4 |
| October 9 |
March 3 |
| October 10 |
March 2 |
| October 11 |
March 1 |
| October 12 |
February 29 |
| October 13 |
February 28 |
| October 14 |
February 27 |
| October 15 |
February 26 |
| October 16 |
February 25 |
| October 17 |
February 24 |
| October 18 |
February 23 |
| October 19 |
February 22 |
| October 20 |
February 21 |
| October 21 |
February 20 |
| October 22 |
February 19 |
| October 23 |
February 18 |
| October 24 |
February 17 |
| October 25 |
February 16 |
| October 26 |
February 15 |
| October 27 |
February 14 |
| October 28 |
February 13 |
| October 29 |
February 12 |
| October 30 |
February 11 |
| October 31 |
February 10 |
| November 1 |
February 9 |
| November 2 |
February 8 |
| November 3 |
February 7 |
| November 4 |
February 6 |
| November 5 |
February 5 |
| November 6 |
February 4 |
| November 7 |
February 3 |
| November 8 |
February 2 |
| November 9 |
February 1 |
| November 10 |
January 31 |
| November 11 |
January 30 |
| November 12 |
January 29 |
| November 13 |
January 28 |
| November 14 |
January 27 |
| November 15 |
January 26 |
| November 16 |
January 25 |
| November 17 |
January 24 |
| November 18 |
January 23 |
| November 19 |
January 22 |
| November 20 |
January 21 |
| November 21 |
January 20 |
| November 22 |
January 19 |
| November 23 |
January 18 |
| November 24 |
January 17 |
| November 25 |
January 16 |
| November 26 |
January 15 |
| November 27 |
January 14 |
| November 28 |
January 13 |
| November 29 |
January 12 |
| November 30 |
January 11 |
| December 1 |
January 10 |
| December 2 |
January 9 |
| December 3 |
January 8 |
| December 4 |
January 7 |
| December 5 |
January 6 |
| December 6 |
January 5 |
| December 7 |
January 4 |
| December 8 |
January 3 |
| December 9 |
January 2 |
| December 10 |
January 1 |
| December 11 |
December 31 |
| December 12 |
December 30 |
| December 13 |
December 29 |
| December 14 |
December 28 |
| December 15 |
December 27 |
| December 16 |
December 26 |
| December 17 |
December 25 |
| December 18 |
December 24 |
| December 19 |
December 23 |
| December 20 |
December 22 |
| December 21 |
December 21 |
So there you have it. Do you think it's surprising that a balmy late September day has the same amount of daylight hours as a cold, snowy mid-March day?
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