Humble Pi: When Math Goes Wrong in the Real World

by Matt Parker

SIDEREAL YEAR 31,558,150 seconds = 365.2563657 days 365 days, 6 hours, 9 minutes, 10 seconds TROPICAL YEAR 31,556,925 seconds = 365.2421875 days 365 days, 5 hours, 48 minutes, 45 seconds