**The date December 27, 1972 in Roman numerals is given as XII.XXVII.MCMLXXII.** Each Roman numeral in this birth date represent a number. For example, I is equivalent to 1, V represents 5, L stands for 50 and M is 1,000.

In Roman numerals, the number 12 is XII and 27 is XXVII. There are rules used to form these Roman numerals, such as when a lower numeral symbol appears after a larger one, the numerals are added. However, when a smaller numeral symbol occurs before a larger numeral symbol, the numerals are subtracted. An example is XL, which represents 40, or 50 - 10. To form Roman numerals that represent very large numbers like 5,000, a bar sign is used over the Roman numeral V.