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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. 

Thousands of programmers around the world are remembered on International Programmers' Day.
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

WeekdayDateYearNameHoliday Type
ThuJan 72010International Programmers' DayWorldwide observance
MonSep 132010International Programmers' DayWorldwide observance
FriJan 72011International Programmers' DayWorldwide observance
TueSep 132011International Programmers' DayWorldwide observance
SatJan 72012International Programmers' DayWorldwide observance
WedSep 122012International Programmers' DayWorldwide observance
MonJan 72013International Programmers' DayWorldwide observance
FriSep 132013International Programmers' DayWorldwide observance
TueJan 72014International Programmers' DayWorldwide observance
SatSep 132014International Programmers' DayWorldwide observance
WedJan 72015International Programmers' DayWorldwide observance
SunSep 132015International Programmers' DayWorldwide observance
ThuJan 72016International Programmers' DayWorldwide observance
MonSep 122016International Programmers' DayWorldwide observance
SatJan 72017International Programmers' DayWorldwide observance
WedSep 132017International Programmers' DayWorldwide observance
SunJan 72018International Programmers' DayWorldwide observance
ThuSep 132018International Programmers' DayWorldwide observance
MonJan 72019International Programmers' DayWorldwide observance
FriSep 132019International Programmers' DayWorldwide observance
TueJan 72020International Programmers' DayWorldwide observance
SatSep 122020International Programmers' DayWorldwide observance

Quick Facts

Many people celebrate International Programmers’ Day on January 7, while others observe this event on the 256th day of the year, usually on September 13 or on September 12 in leap years.

International Programmers' Day 2016

Thursday, January 7, 2016
Monday, September 12, 2016

International Programmers' Day 2017

Saturday, January 7, 2017
Wednesday, September 13, 2017

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Name in other languages

NameLanguage
International Programmers' DayEnglish
Día Internacional de los ProgramadoresSpanish
יום המתכנתHebrew
يوم المبرمجArabic
프로그래머의 날Korean
Programmerernes dagNorwegian
Internationaler Tag der ProgrammiererGerman

Alternative name

International Programmers' Day

List of dates for other years

United Nation Holiday on September 12, 2016

Fun Holiday on September 12, 2016

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