The millennium date of Nov. 11 this year, or 11/11/11, that comes but once in a thousand years is keeping obstetrics clinics busy in Korea.

Many pregnant women are apparently trying to fix the birthday of their child for superstitious reasons. One women's clinic in Jung-gu, central Seoul, has over 15 Caesarean section scheduled for Friday, way more than its daily average of 10, while other obstetrics clinics reportedly have 20 to 30 percent more C-section booked for the date.

"There are rumors that pregnant women are fixing their delivery date for Friday to get a so-called 'golden number' for their baby's resident registration number that starts with 111111."

But doctors say that forced delivery is not a good idea. An obstetrician said, "A forced premature delivery can harm the mother's health as well as the baby's, and the child has to stay in the incubator."