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International Programmers' Day

International Programmers’ Day celebrates the positive changes that programmers make to improve our everyday lives. It is usually held on January 7, but is also popularly celebrated on September 13, or on September 12 in leap years. 

Is International Programmers' Day a Public Holiday?

International Programmers' Day is not a public holiday. Businesses have normal opening hours.

Young man typing on a computer keyboard with binary code passing on the screen.
Thousands of programmers around the world are remembered on International Programmers' Day.
©iStockphoto.com/bowie15

What Do People Do?

Programmers are greeted with positive comments like “Happy Programmer’s Day” in some work environments on International Programmers' Day. The observance is also mentioned among programming communities in online forums and social media, including on Facebook or Twitter.

Public Life

International Programmers’ Day is an observance and not a public holiday.

Background

International Programmers’ Day was launched in 2007 to honor programmers. The day is celebrated in many countries and is officially observed in Russia. In 2009 Russian President Dmitry Medvedev signed a decree for the “Day of the Programmer” to be celebrated on the 256th day of the year, which is usually September 13, or on September 12 in leap years.

Symbols

Many people observe International Programmers’ Day on the 256th day of the year because “256” (28) is the number of distinct values that can be represented with an 8-bit byte, and 256 is the highest power of 2 that is less than 365, the number of days in a year.

International Programmers' Day Observances

YearWeekdayDateNameHoliday Type
2010ThuJan 7International Programmers' DayWorldwide observance
2010MonSep 13International Programmers' DayWorldwide observance
2011FriJan 7International Programmers' DayWorldwide observance
2011TueSep 13International Programmers' DayWorldwide observance
2012SatJan 7International Programmers' DayWorldwide observance
2012WedSep 12International Programmers' DayWorldwide observance
2013MonJan 7International Programmers' DayWorldwide observance
2013FriSep 13International Programmers' DayWorldwide observance
2014TueJan 7International Programmers' DayWorldwide observance
2014SatSep 13International Programmers' DayWorldwide observance
2015WedJan 7International Programmers' DayWorldwide observance
2015SunSep 13International Programmers' DayWorldwide observance
2016ThuJan 7International Programmers' DayWorldwide observance
2016MonSep 12International Programmers' DayWorldwide observance
2017SatJan 7International Programmers' DayWorldwide observance
2017WedSep 13International Programmers' DayWorldwide observance
2018SunJan 7International Programmers' DayWorldwide observance
2018ThuSep 13International Programmers' DayWorldwide observance
2019MonJan 7International Programmers' DayWorldwide observance
2019FriSep 13International Programmers' DayWorldwide observance
2020TueJan 7International Programmers' DayWorldwide observance
2020SatSep 12International Programmers' DayWorldwide observance

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