XI-XXI-MMXI
September 21, 2013 can be written in Roman numerals as "XXI-IX-MMXIII".
December 21, 2011 is written as "XII XXI MMXI" in Roman numerals.
xiii SEPT MCMXCVIII
It is: III-XXI-MMXI
XXI is the number 21 in Roman numerals.
September 21, 2013 can be written in Roman numerals as "XXI-IX-MMXIII".
December 21, 2011 is written as "XII XXI MMXI" in Roman numerals.
xiii SEPT MCMXCVIII
It is: X-XXI-MMXI
It is: X-XXI-MMXII
It is: III-XXI-MMXI
XXI is the number 21 in Roman numerals.
It is: III-XXI-MMXI
21 in Roman numerals is XXI. 1 in Roman numerals is I. 90 in Roman numerals is XC. So, 21 1 90 would be XXI I XC in Roman numerals.
In today's modern notation of Roman numerals: IX-XXI-MCMLXXXII but the ancient Romans probably wrote them out quite differently.
The date 21-11-2007 in Roman numerals would be XXI.XI.MMVII
10 21 1986 in roman numerals: X XXI MCMLXXXVI