I-XXV-MMVI
It is: 2006 = MMVI
2006 = MMVI
MMVI
January is the first month and written using I. So the date would be shown as I-VI-MMVI.
It is MMVI = 2000+6 => 2006
X-MMVI
You could also write June.3rd.2006 as 06.03.2006 and the Roman numerals for these is... June.III.MMVI or VI.III.MMVI.
XII-I-MMVI
Write the date in month, day, year format (May 6, 2006) in roman numerals as V.VI.MMVI
IV-XXVIII-MMVI
It is: IX-XXX-MMVI
It is: IX-X-MMVI