🔬 Science 2d ago · Ethan Siegel

Only four days each year are actually 24 hours long

Big Think
Big Think science
View Channel →
Only four days each year are actually 24 hours long
Source ↗ 👁 0 💬 0
To mark the passage of time, we assign 24 hours to each day, universally.



Most of us are very used to 24 hours being in a day but aren’t used to the fact that this doesn’t correspond to a 360 degree rotation of the Earth. Most days, however, are either longer or shorter than 24 hours; only 4 days a year have precisely 24 hours to them.

Credit: geralt/pixabay


While that’s accurate for a day’s average length, most days aren’t 24 hours long.



This diagram shows an analemma, constructed by p

Comments (0)

Sign in to join the discussion

More Like This

Indonesia’s Anak Krakatau
NASA · 2h ago
Curiosity Postcard Celebrates Rover’s 5,000th Day on Mars
NASA · 2h ago
NASA Visits Schools Strengthening Florida’s Skilled Workforce
NASA · 2h ago
NASA Astronaut Reid Wiseman to Join NFL Fans in Baltimore
NASA · 2h ago
On this day in space! Sept. 16, 1949: A US launch of a V-2 rocket explodes, killing its monkey passenger Albert III
Latest from Space.com · 2h ago
NASA’s Integrated Medical Model (IMM)
NASA · 3h ago