XXI is the number 21 in Roman numerals.
In today's notation: XI-XXI-MCMXCI
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 notation of Roman numerals: XI-XXVI-MCMXCVII
November 27 is represented as XXVII-XI in Roman numerals.
XXI is the number 21 in Roman numerals.
In today's notation: XI-XXI-MCMXCI
November= NOV. 21=xxi 1980=MCMLXXX therefore: November 21, 1980 = NOV. xxi MCMLXXX
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 notation of Roman numerals: XI-XXVI-MCMXCVII
November 27 is represented as XXVII-XI in Roman numerals.
10 21 1986 in roman numerals: X XXI MCMLXXXVI
The date 21-11-2007 in Roman numerals would be XXI.XI.MMVII
The conventional conversion of 19th November 2006 into Roman numerals is XIX November MMVI whether or not the Romans themselves did it this way is open to question.
November 5th, 1992 in roman numerals would be: XI/V/MCMXCII
The birthday 21-04-1989 in Roman numerals would be XXI.IV.MCMLXXXIX
14th November, 1994 would be XIV. XI. MCMXCIV in Roman numerals.