Interesting question, I have never paid any attention to the date. Would be nice if you tell us tomorrow - when the catch/hatch date is identically to Nincada's, fair enough, and when it is not, change the DS date to 11.11.11.
Besides, is there a DD-Lum-Dragonite counter? Usually I just revenge kill it with Scarf-Terrakion, when Multi is broken. The opponent somehow gets rid of SR, I find it fairly difficult, as it will go for a second boost. Scarf-Haxorus can OHKO Dragonite with Dragon Claw, but it HAS to come in DD because in other cases it would be dead. Some people recommend Quagsire, but its stats are more horrible and can easily be circumvent.