11: XI 05: V
1981: MCMLXXXI
11 = XI, 5 = V and 1981 = MCMLXXXI, so the date 11 05 1981 would be XI-V-MCMLXXXI
In todays notation of Roman numerals: V-XVIII-MCMXCII
To write the date 05 08 2005 in Roman numerals, it would be written as V-VIII-MMV.
V-IX-MMX
X-V-MMV
It is: V-VIII-MMV
May 28th 1975 can also be written as 05-28-1975 and in Roman numerals this would be V.XXVIII.MCMLXXV
In Roman Numerals: 05- V 01- I 1984- MCMLXXXIV
05 01 1987 in Roman numerals is V.I.MCMLXXXVII.
The date 12-05-1992 in Roman numerals would be XII.V.MCMXCII
The date 25-05-05 in Roman numerals is XXV.V.V and the date 25-05-2005 is XXV.V.MMV
In todays notation of Roman numerals: V-XXIX-LXXXIX But the ancient Romans would have notated them quite differently.