III/VI/MMI
It is: VI-I-MMI
V-VI-MMI
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.
June-XI-MMVIII
June vii mmviii
06.05.2012
VI-XVII-MMI
VI-VIII-MMXII
It is: VI-XXVI-MMXI
It is: VI-II-MMX
It is: VI-XXIII-MMXI
VI-IV-MMXI