Calendars

Every Friday the 13th, palindrome days, the Unix clock's round numbers and the leap seconds, 1900–2100.

The most influential paintings — the ones the most Wikipedias write about — each across the years it was painted, shown as the painting itself.

Every product Google launched and shut down, from launch to shutdown — Google Reader, Google+, Stadia and ~300 more. Data: Killed by Google (killedbygoogle.com, MIT).

Every Mercury retrograde, from the day the planet seems to stop and back up against the stars to the day it turns forward again.

Every book that reached No. 1 on The New York Times best seller lists since 1931 — Fiction and Nonfiction side by side, consecutive weeks as one bar.

Every Pantone Color of the Year since Cerulean in 2000, each year painted in its color.

Time magazine's Person of the Year since Charles Lindbergh in 1927 — the person, group or idea that most shaped each year, with Time's reasons and the cover.

Each week's three most-anticipated new video games — the ones most read about on Wikipedia — from release day through the weekend, a year ahead.

What the internet was thinking: English Wikipedia's most-read article each day since the end of 2015, from Wikimedia's pageview data — with bot-driven spikes left out.

The Sun's way through the twelve signs of the Western (tropical) zodiac, each from the moment it enters one.