Visualization of every keytweeter tweet since the beginning of the project. The horizontal axis is on the scale of a year, the vertical axis is over each day, starting with midnight at the top and moving on to noon in the middle. Some of this comes from Twitter directly and thus has a fixed timezone, while the most recent data comes from personal logs which compensates for my time zone.
Keytweeter will be complete at the end of this month.
Some of the biggest shifts come from switching time zones temporarily or staying up late working on projects. But you can also see a general downwards trend corresponding either to laziness or perhaps an unusually long circadian rhythm.
The data will be publicly available soon. Please contact me if you're interested in visualizing it.