Today we celebrate Gioachino Rossini, born in Pesaro, Italy in 1792. By normal math, the famed opera composer and eccentric would be 224 years old today. But with Rossini it’s not so simple. Because he was born on February 29, i.e. leap day, we need to employ some special math to calculate his birthday. So today, instead of 224, we say that Rossini is 54.