What should be the ideal work timings for 6 day working company?

Wanted to know what should be the ideal work timings for 6 day working company
As there are no half days on saturday
As per labour law, it says 9 hours in a day, should not exceed more than 48 hours in a week
Ideally if we work for 9 hours then it goes to 54 hours in a week.
In this scenario, employee always feel that we are working for more hours in a week. can we ask management to reduce it by 30 mins on a daily basis.
which means 8.5 hours (inclusive of 30 mins lunch break ) a day and 51 hours in a week

Dear Friend,
As per Factories act, Every 4 hours of work half an hour rest to be provided.

Dear Member
According to you as per labour law, it says 9 hours in a day, should not exceed more than 48 hours in a week. In six day working you can take work for 8 hours daily with rest interval extra. In five day working you can take 9 hours actual working with rest interval extra. In six day working it becomes 48 weekly hours while in case of five day working it becomes 45 weekly hours. In general we are to allow at least half an hour rest before five hours continuous working.
R N KHOLA