Tastidian, could you explain your binary theory? I don't get it.

Base 8:

K = 11 = 13

Z = 26 = 32

13 x 32 = 436

April 3rd, 2006 or March 4th, 2006

436 = 286 in Base 10

February 8th, 2006 or August 2nd, 2006

The average of these is 117.5 days into the year, putting KZ's birthday somewhere around April 27th or April 28th, 2006. Which would make him around 4.18754 years old.