Jordan 5 "Black Tongue" - LEft and Right Shoe DIFFERENT Dates

[sugomaster]

Hi, I would like to as if this is normal.. My J5's left and right shoe has DIFFERENT Manufacturing ending date..

IS THIS REALLY NORMAL???

Left Shoe   =      3 / 13 / 13   -    4 / 30 / 13

Right Shoe =      3 / 13 / 13   -    4 / 16 / 13

THEY HAVE SAME STARTING... BUT DIFFERENT AT ENDING DATE???

IS THIS REALLY NORMAL???  HELP ME PLEASE.. THANKS