Eventually I discovered Grace Park's real birthday, which was incorrect on IMDb. Someone over there must have been sloppy when they were adding the BSG cast and duplicated the birth date from Katee Sackhoff's guide. I submitted a correction to IMDb on January 27, 2006, using an interview with Grace to verify the new date. A few days later, IMDb corrected the information.
Apparently most other sites continued to list the incorrect birth date for Grace. She discussed the mix-up in a video interview, which was posted on the official Battlestar Galactica/Sci Fi site in the fall of 2006. Interestingly enough, she showed a screenshot of IMDb with her correct birth date and then showed several other websites with the incorrect date. She pointed out that the other sites got it wrong. The video editing implied that IMDb got it right and was the only site to get it right. Little did Sci Fi or Grace know the true story.... Yes, this is exactly how it all happened. Sadly though, I didn't get any credit for correcting the information on IMDb.
Oh well, at least I was able to make a small contribution to the accuracy of information about Grace on the Internet. If anyone from Sci Fi or the BSG production staff wants to verify this, they can check with IMDb. Maybe give me a cameo?