From http://en.wikipedia.org/wiki/August_13
1961 - The German Democratic Republic closes the border between the eastern and western sectors of Berlin to thwart its inhabitants' attempts to escape to the West.
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The work area of 11 by 13 is 143.
29 th september 2022 is 12 hours day and night at veraval , gujarat , india
This is the Fibonacci sequence, where the number is the sum of the two preceding numbers. The nth term is the (n-1)th term added to (n-2)th term
I believe February the 14th of the year 1999 A.D. fell on a Sunday.
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