1 It can cause severe brain damage to a baby during birth. 2  Early detachment of the placenta, a ruptured uterus during birth or the umbilical cord getting pinched in a way that restricts blood flow can cause oxygen deprivation.
Because the time between two full Moons doesn't quite equal a whole month, approximately every three years there are two full Moons in one calendar month. The next time two full Moons occur in the same month (as seen from the United States) will be July 2015. The most recent blue Moon occurred in August 2012.
Although the full moon happens during the daylight hours for the Americas, and is still below the horizon at this full moon instant, we can still say the Harvest Moon comes on the night of September 16-17. But the moon might look equally full to your eye on the night of September 15-16, or the night of September 17-18.