My google calendar had the moon phases on it so I only really know from that.
I just looked up moon phases for my boys. I ovulated the day after the new moon with DS2 and a week before the new moon with DS1 (half moon?).
If I go by this chinese gender predictor it has my boys correctly predicted and then predicts girl for this month - Chinese Gender Predictor | BabyCenter
But this one has my boys correctly predicted too but says boy this month - TheBump.com - Pregnancy, Parenting and Baby Information
Maybe I'm going to get pregnant with boy girl twins? lol