Not everywhere has Saturday/Sunday weekends, so many people work on Sundays. See https://en.wikipedia.org/wiki/Workweek_and_weekend#Around_the_world https://en.

Not everywhere has Saturday/Sunday weekends, so many people work on Sundays. See https://en.wikipedia.org/wiki/Workweek_and_weekend#Around_the_world https://en.wikipedia.org/wiki/Workweek_and_weekend#Around_th...