Bandwidth can be defined as the amount of information that can flow through a network at a given period of time. Bandwidth actually gives the maximum amount of data that can be transmitted through a channel in theory. When you say that you have a 100 Mbps broadband line you are actually referring to the maximum amount of data that can travel through your line per second, which is the bandwidth.
Whether Saturday is a working day or not depends on the custom or usage of the trade or jurisdiction. 2. Law: Any day other than Sunday or gazetted or statutory holiday.
They are not 'working days' but there is post on Saturday mornign which mean you can count in delivery days...(in the UK at least).