Conversation so far:
when does the work week start and end
The workweek can start on any day and at any time. It does not have to follow a calendar week. The workweek must include seven consecutive days.
when did the romas begin using the seven-day week
The ancient Romans traditionally used the eight-day nundinum but, after the Julian calendar had come into effect in 45 BC, the seven-day week came into increasing use.

Question: What about Asia
Self-contained rewrite: When did Asia begin to use a seven day week