Do the lunar calanders and old wives tales really work on gender prediction?

[sarastuddard]

I am four weeks and six days pregnant with my third child. I have two wonderful boys and I would love to have a daughter to pass on my grandmothers name. All the old wives tales and the lunar calander say I'm having a girl! The lunar calander was correct with both my boys and all my symptoms with this pregnancy are very different than with my two boys. Is their any truth to these methods of gender prediction?