The Babylonians celebrated every seventh day as a “holy day”, also called an “evil day”, starting from the first day of the month, i.e. sighting the new crescent moon when officials were not allowed to do some activities and “making a wish” was forbidden for common people.

The last day of the month, the 28th day is known as a “rest day” when offerings were made to different gods and goddesses, apparently at nightfall to avoid the prohibitions.