In today's terms it is: October-XXI-MCMLXXXI or as X-XXI-MCMLXXXI
1981 in Roman numerals is written as MCMLXXXI.
VI-XXII-MCMLXXXI
11: XI 05: V 1981: MCMLXXXI
8 8 1981 in Roman numerals is VIII VIII MDCCCCLXXXI or IIX IIX XXMMI. Note that 1981 is not MCMLXXXI in Roman numerals.
The date 10-02-1981 in Roman numerals would be X.II.MCMLXXXI
The date 01-06-1981 in Roman numerals is I.VI.MCMLXXXI
1981 = MCMLXXXI
In todays notation of Roman numerals: I-XII-MCMLXXXI
X-XII-MCMDXXXI
MCMLXXXI is already a Roman numeral. In Hindu-Arabic numerals it equates to 1981.
In todays notation of Roman numerals: XVIII-VII-MCMLXXXI
VIII.XXVI.MCMLXXXI