Working all day on Saturday is okay but working all day on Sunday is something else again.

Fact
Aztecs believed that the sun died every night and needed human blood to give it strength to rise the next day. So they sacrificed 15,000 men a year to appease their sun god, Huitzilopochtli. Most of the victims were prisoners taken in wars, which were sometimes started solely to round up sacrificial victims.      .. More >>