Well, Miss Gemini (Ann, that is), I, too, am a Pisces. Aren't Pisces just wonderful people? :p Hate fish. I think Clark's birthday on the show is February 28th. If I remember correctly, it was originally supposed to be February 29th until someone at the show realized that 1966 (Clark's birth year on LnC) wasn't a leap year. But if they'd really, really wanted to keep that, I wouldn't have thought that it would that much of a big deal to make Clark either 2 years younger or 2 years older unless they were going for Dean Cain's birth year. But they made Lois younger than Teri Hatcher's birth year, so who knows?
