SortStack #3217 — 2035-03-31

By duration · Order from shortest to longest.

1. A dentist-approved tooth brushing session 2 min

   Studies show most people actually brush for about 45 seconds while believing they've done the full recommended time.

2. 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.

3. A tiger's pregnancy 105 days

   Cubs are born blind and helpless at around a kilogram — yet within two years they're apex predators ten times their mother's litter weight.

4. The Second World War 6 years

   From the invasion of Poland to Japan's surrender, it remains history's deadliest conflict — fighting officially ended on a battleship in Tokyo Bay.

5. One orbit of Pluto around the Sun 247.9 years

   Pluto hasn't completed a single orbit since its discovery in 1930 — it won't finish its first 'observed year' until 2178.

6. How long the Hagia Sophia has been standing 1.5K years

   Built in just five years under Justinian, it has since served as cathedral, mosque, museum, and mosque again across nearly 1,500 years.

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