So I could for a long time now spot public holidays, weekends, and general stuff on network graphs, but never did I suspect I’d be able to detemine lunch and tea times based on network traffic graphs! Anyway, check this one out:
One can clearly see the 10:00 tea time, then lunch at 13:00 and tea again at 15:00 before things start quieting down for the weekend at around 16:30. Surprisingly there is still a decent amount of activity for a saturday :).