SortStack #1341 — 2030-02-09

By duration · Order from shortest to longest.

1. An average human yawn 6 sec

   Yawns are so contagious they jump species: dogs catch yawns from their owners, and even reading the word can trigger one. You're welcome.

2. One full rotation of Earth on its axis 23.9 h

   A true rotation takes 23 hours 56 minutes — the extra 4 minutes of our day come from Earth also moving along its orbit and needing to catch up to the Sun.

3. Rio de Janeiro's Carnival, official festival period 5 days

   Around two million people hit the streets per day, and the samba school parade is a fierce contest judged on dozens of criteria.

4. The Islamic holy month of Ramadan 29.5 days

   Because it follows the lunar calendar, Ramadan drifts about 11 days earlier each year — cycling through every season over 33 years.

5. The Romanov dynasty's rule over Russia 304 years

   It began with a 16-year-old reluctantly accepting the throne in 1613 and ended 304 years later with Nicholas II's abdication in 1917.

6. The Western Roman Empire, from Augustus to its fall 501.9 years

   After the West fell in AD 476, the Eastern half carried on for nearly a thousand more years as the Byzantine Empire.

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