Programmers Day
Also known as the Day of the Programmer, this day is always held on the 256th day of the year (a number well-known by programmers).
Summary: Celebrate the programmers in your life during this annual holiday! Programmers’ Day takes place annually on the 256th day of the year. This means the event typically falls on September 13, unless it is a leap year.
The number 256 was chosen because it is, according to Concordia University, “the number of distinct values that can be represented with an 8th byte (2 to the 8th power),” as well as the greatest power of two less than 365, the number of days typically in a year.
What to do: There is no traditional greeting for this day.