17th May, 1990 would be XVII. V. MCMCX in Roman numerals.
In today's notation of Roman numerals: X-XIV-MCMXC
VIII-IV-MDCCCCXC
7: VII 25: XXV 1990: MCMXC
August 26th, 1990 is written as: VIII/XXVI/MCMXC
The date 18-06-1990 in Roman numerals would be XVIII.VI.MCMXC
17th May, 1990 would be XVII. V. MCMCX in Roman numerals.
In today's notation of Roman numerals: X-XIV-MCMXC
JulyIII MDDCXC
VIII-IV-MDCCCCXC
11-27-1990 = XI-XXVII-MCMXC
7: VII 25: XXV 1990: MCMXC
"MCM" is 1990 in Roman. The rest of the date doesn't translate well as the Roman calendar is not the same as our own.
August 26th, 1990 is written as: VIII/XXVI/MCMXC
Xii-12 xx-20 mcmxc-1990
November 9, 1990 is written as IX-IX-MCMXC in Roman numerals. The "IX" represents November, the "IX" represents the day (9th), and the "MCMXC" represents the year (1990).
It is meaningless because they are an invalid arrangement of Roman numerals.