Programmers' Day is an international professional day recognized in many technology companies and programming firms, that is celebrated on the 256th (hexadecimal 100th, or the 28th) day of each year (September 13 during common years and on September 12 in leap years). It is officially recognized in Russia and observed in several other countries, including Argentina, Australia, Austria, Bangladesh, Belarus, Belgium, Brazil, Bulgaria, Canada, Chile, China, Croatia, Czech Republic, Denmark, Estonia, France, Germany, Guatemala, India, Ireland, Israel, Italy, Latvia, Mexico, Mongolia, New Zealand, Palestine, Pakistan, Papua New Guinea (highland region), Poland, Romania, Serbia, Slovakia, Slovenia, South Africa, Ukraine, the United Kingdom, the United States and Uruguay.
The number 256 (28) was chosen because it is the number of distinct values that can be represented with an eight-bit byte, a value well-known to programmers. 256 is also the highest power of two that is less than 365, the number of days in a common year.
This particular day was proposed by Valentin Balt and Michael Cherviakov, employees of Parallel Technologies (a software company). As early as 2002, they tried to gather signatures for a petition to the government of Russia to recognize the day as the official programmers' day.
On July 24, 2009, the Ministry of Communications and Mass Media (Russia) issued a draft of an executive order on a new professional holiday, Programmers' Day.
- Decree #1034
- "Dmitry Medvedev issued an executive order establishing a new professional holiday, Programmers' Day.". Kremlin.ru. 2009-09-12. Retrieved 2009-09-12. "Programmers' Day will be celebrated on the 256th day of each year, that is on September 13 or 12 depending on whether the year is a leap year."
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- «Праздник 256-го дня»
- «У программистов может появиться свой официальный праздник»
- "Ъ-Новости - Российские программисты получат профессиональный праздник". Kommersant.ru. Archived from the original on 2012-06-30. Retrieved 2011-09-13.
- Президент России подписал указ об утверждении Дня программиста
- Президент Российской Федерации. Указ №1034 от 11 сентября 2009 г. «О дне программиста». Вступил в силу 11 сентября 2009 г.. Опубликован: "Российская Газета", №172, 15 сентября 2009 г.. (President of the Russian Federation. Decree #1034 of September 11, 2009 On Programmers' Day. Effective as of September 11, 2009.).