When is the proper time for a brit?

The brit milah is done eight days after a baby is born during daylight hours. In Jewish law the day follows the night, so a baby born Sunday night counts as if he was born on Monday (where the baby was born during twilight, consult your mohel). As a rule, the milah is performed on the eighth day even if it fall out on a Shabbat or holiday. The exceptions to this rule are where there is a danger to the baby's health, in which case the brit is postponed until the child is well, and for babies born through Caesarian section, in which case the brit is not done on Shabbat or holidays.