When do you really code?

Programmers are machines that turn caffeine into code.

But is that actually true? I'm writing a book about Why programmers work at night and I'm using Github data to see whether our perceptions match reality. To do this, I need your help.

What's this?

A punchcard of the Github repositories where you contributed at least 80% of commits to the master branch.

The punchcard shows when you are making commits and is calculated as an aggregate of the punchcards Github shows per repository.

For science!

Everyone's data is being added to a global punchcard so we can answer once and for all "Do programmers work at night?"