A familiar, everyday layout to show data over time. It is especially useful to show recurring weekly patterns.

Tutorials and Guides


Mass shootings calendar

A shooting in Monterey Park, California on Lunar New Year’s eve left 11…

Day of the year companies stop paying women

One way to think about gender pay gap is to imagine women receive…

All the National Food Days

Keep track of the 214 days out of the year that are a national food or drink days.

Vehicles involved in fatal crashes

After seeing a map in The Guardian, I was curious about what other data was available from the National Highway Traffic Safety Association. It turns out there's a lot. scrobbles as calendar heat map

Martin Dittus, a former employee, grabbed listening data for staff, moderators, and…

Shouldn’t You Be Using Firefox By Now?

I’ve been using Mozilla Firefox for years and have nothing but good things…