This is 9:09 am. 09/09/09 (all the nines). However, I'm not sure of the question. if it helps, 1999 had more nines.
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At the time of writing (06:30) on 09/02/11 - 137 hours 30 minutes until 00:00 on the morning of the 15th
10:45 - 01:40 = 09:05 five past nine
9 hours 20 minutes 14:00 - 04:40 = 09:20 = 0:20 + 07:00 + 02:00
0:20 + 2:00 + 4:23 = 6:43 Answer: 6 hours 43 minutes 16:23 - 09:40 = 06:43
If you write September 09 2009 as 09-09-2009 then you can write using these numerals IX (9) and MM = 2000, so 09-09-2009 becomes IX.IX.MMIX