In most places, Saturday is a day off for businesses, therefore they are typically closed. Banks are also closed on Saturday. However, there is no one norm that applies everywhere; some establishments or places may be open on Saturdays, particularly if they cater to people on weekends. In some regions, Saturday may even be a regular workday! The most important thing is to contact the business or bank directly to find out if they are open on Saturdays.
No, Saturday isn’t regarded as a working day. If you’re ever unclear about the precise date that item needs to be shipped, visit the Orders page to find out.