I - xxx - mcmlxiii
It is: I-XXX-MMXII
January is the first month so it would be one. I.XXX.MMIX would be the correct notation.
The date 30th April 1998 can also be written as 30-04-1998 and in Roman numerals this would be XXX.IV.MCMXCVIII
The Roman numerals of XXX means the 30th modern Olympic games.
30th May, 2008 would be XXX. V. MMVIII in Roman numerals.
December 30th, 2010 is wrote as: XII/XXX/MMX
30th September 2006.
III-XXX-MCMLXI
IX/XXX/MMI
30th August 1969 is XXX. VIII. MCMLXIX.
April-XXX-MMX or as IV-XXX-MMX
In todays modern notation of Roman numerals: VIII-XXX-MCMXCII but the ancient Romans would have probably wrote out the equivalent of 1992 quite differently