Does any one know of a culture that doesn't run on a seven day week?

http://www.wfu.edu/~moran/planets_y_powers.html

The ancient Egyptians had a ten-day week, and so did the Chinese. The ancient Assyrians invented the seven-day week, and the names of days of the week that we use even today are based on a system of assigning the five planets visible to the naked eye, the sun, and the moon to the seven days of the week.

http://www.therthdimension.org/AncientRome/Calenda...

Rome had an 8 day week until after 19bc when they changed it to 7.

The pagan Romans had a nine-day week. In 'Racing Pigs and giant Marrows' Harry Pearson writes:

'The rural roman worked for eight days and took the ninth off (later Jehovah would undercut this with a six-and-one deal which effectively wiped out his pagan rivals. Jehovah clearly had a good grasp of human psychology. I mean, who's going to work two extra days a week just for the right to make human sacrifices to a gnarled tree?).