The Bris of a healthy baby is done on the eighth day of life (counting the day of birth). This is so, even if the eighth day falls on Shabbos, Yom Kippur or any other Jewish festival. However, in the case of a baby born by caesarean section, the Bris is not performed on Shabbos or on a festival, but on the day following. Bris Milah may not be performed before the eighth day or at night. In the event that a baby is not in perfect health - even if not seriously ill - the Bris is delayed until both the doctor and the mohel are in agreement as to the healthy status of the baby. A common example of this situation is newborn jaundice. However, in the case of serious illness, a delay of one week following full recovery is required.