How you write 'my birthday' in Roman numerals depends on the date of your birthday.
The birthday 21-04-1989 in Roman numerals would be XXI.IV.MCMLXXXIX
The birthday 10-15-1997 is X-XV-MCMXCVII in roman numerals.
In todays notation of Roman numerals: VI-XIX-MCMLXXXV
The birthday of February 24th, 1986 written in roman numerals is: II/XXIV/MCMLXXXVI
The birthday 10 12 1984 in Roman numerals is X.X.MCMLXXXIV.
XIV.I.MCMLXXI
III.XXXI.MCMLXXIX
Your birthday, February 10, 1982, in Roman numerals is written as X.II.MCMLXXXII.
In todays notation of Roman numerals: XVII-IX-MCMLXXXII
In todays notation of Roman numerals it is: IV-XII-MCMXCVII
In today's notation of Roman numerals: XII-XXVII-MCMLXXIX