SortStack #1033 — 2029-04-07

By duration · Order from shortest to longest.

1. One human heartbeat at rest 798 ms

   Your heart beats roughly 100,000 times a day and around 3 billion times in a lifetime, pumping enough blood to fill an Olympic pool several times over.

2. One full rotation of the London Eye 30 min

   It moves so slowly — about 0.9 km/h — that it usually doesn't stop to let passengers on; you simply step into the moving capsule.

3. The Titanic's sinking, from iceberg to going under 2.7 h

   The ship's band famously kept playing on deck for most of it — and the iceberg itself had likely calved from a Greenland glacier years earlier.

4. 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.

5. A frilled shark's pregnancy 3.5 years

   At an estimated three and a half years, it's the longest known gestation of any vertebrate — embryos grow just over a centimetre a month.

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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