Programmers' Day 1901

Friday, 13 September 1901

Programmers' Day is celebrated on the 256th day of the year, a number significant in computing as a power of two, honouring software developers, programmers, and the global technology community.

Frequently asked questions

When is Programmers' Day 1901?
Programmers' Day 1901 is on Friday, 13 September 1901.
What day of the week is Programmers' Day 1901?
It falls on Friday.
How is Programmers' Day calculated?
This event is observed on the 256th day of the year.