Super Bowl LIX kicks off on Sunday. What number is that, though? Here's how to use Roman numerals and why the NFL uses them for the championship game.

The use of Roman Numerals began with the fifth edition, Super Bowl V, in 1971. They remained every year up until Super Bowl 50, which would have been Super Bowl L, and returned the following year.

The first decades of the Super Bowl featured relatively basic logos using Roman numerals and typically red, white, and blue colors.

How to read Roman numerals The letter "I" represents a single number. However, roman numerals are read left-to-right, meaning a one in front of a "V" would translate to four.

This KS2 Maths article explains how Roman numerals uses letters instead of numbers to represent values.

The use of Roman Numerals began with the fifth edition, Super Bowl V, in 1971. They remained every year up until Super Bowl 50, which would have been Super Bowl L, and returned the following year.

Since early in the game’s history, the NFL has labeled almost every Super Bowl with a Roman numeral. Why?

Why does the NFL use Roman numerals to label each Super Bowl? It's been almost six decades since the first-ever Super Bowl (1967) but what if I told you the league didn't call it that until 1969?

Everything you need to know about Super Bowl week in Atlanta For decades, the NFL has kept count of Super Bowls using Roman numerals. Why? The very first Super Bowl was played on January 15, 1967.

For nearly every year since its inception, the NFL has used Roman numerals to identify each Super Bowl. But why?