It is MM.
The year of 1991
12 o-clock is midday 12 inches = 1 foot 12 = a dozen 12 = XII in Roman numerals 12 is an even, composite and rational number 12 is the number of months in a year
2000 a month is 24000 a year.
it means Fiscal Year 2000, it's the business year that falls mostly in the 2000 calendar year
12:33
2000 in Roman Numerals is MM
They are: 2000 = MM
The year 1450 is written in roman numerals as MCDL.
The year 1958 is written as MCMLVIII in Roman numerals.
MD
MMII
MX
In today's terms it is represented by the numerals MCMXCVIII but the Romans themselves would probably have written it as IIMM (-2+2000 = 1998).
2000
In today's modern notation of Roman numerals it is MCMXCV but the ancient Romans probably have wrote it out quite differently
The year so far which has required the most Roman numerals to represent would probably be 1888, which is MDCCCLXXXVIII
In Roman numerals it is the year MCMLXIV. In Arabic numerals it is the year 1964.