Did the Chinese gender prediction calendar accurately predict anyone's baby's gender or get it wrong?

FOR FUN:

Was the Chinese gender prediction chart right for you???

Hey preggies! This is like a super nerd alert but I've found an equation developed and validated by researchers/OBs/mathematicians out of Duke Medical Center that predicts birth weight. Out of 87% of births, weight was predicted within 15% of actual birth weight- nearly the same accuracy as birth weight predicted via ultrasound. I just did the equation and if I had Baby D now, she'd weigh 6.46lbs!

My doctor predicted I would go into labor this weekend and it's funny I'm having contractions that are 40 seconds long and 3 minutes apart. Can't get comfortable at all.