יום המתכנת שמח לכולם | Happy Programmers' Day

[B.D.B]

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Programmers' Day (Russian: День программи́ста) is an international unofficial professional holiday that is also officially recognized in Russia[1][2], celebrated on the 256th (0x100th) day of each year (September 13 during common years and on September 12 in leap years).

http://en.wikipedia.org/wiki/Programmers' Day

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