These 24 hour donut clocks represent the top 10 countries on wikipedia (by edits) showing which hours of the day are the most popular. The area of each donut is sized proportionately to the total edits of each country, such that the area of the arcs is comparable across countries.
The Plywood query to pull the data for this visualization is:
$('main')
.filter($('time').in({ start: new Date('2015-11-01T00:00:00Z'), end: null }))
.filter('$country != null')
.split('$country', 'Country')
.apply('TotalEdits', '$main.count()')
.sort('$TotalEdits', 'descending')
.limit(10)
.apply('HoursOfDay',
$('main').split($("time").timePart('HOUR_OF_DAY', 'Etc/UTC'), 'HourOfDay')
.apply('Edits', '$main.count()')
.sort('$HourOfDay', 'ascending')
)
Inspired by http://bl.ocks.org/mbostock/4c5fad723c87d2fd8273