> > Yeah, we already do the Feb 29 thing every 4 years. > Except it's not every four years. > It's every four years, but it is skipped if the year is divisibl

> > Yeah, we already do the Feb 29 thing every 4 years. > Except it's not every four years. > It's every four years, but it is skipped if the year is divisible by 100… but not skipped if it is also divisible by 400—which ended up biting people in 2000 which was a leap year …. Unless they edited, that's exactly what your parent said, after you cut off the quote: > Yeah, we already do the Feb 29 thing every 4 years. We make exceptions to that rule every 100 years, and an exception to the exception every 400 years.