Not working on a weekend seem to be a general thing for the banking industry. If a transaction is done after 3:00pm on Friday, it is treated as a Monday transaction. Hence, there is no point for Adobe to process payment on a week-end.
Not working on a weekend is the normal in the Western world. Working days are defined from Monday to Friday. Saturday and Sunday are days off. (I do not know if other regions have only one day in the week off, and that that day is different from Saturday or Sunday)
Generally, there are only limited services available on Saturdays (shopping is possible, where I live) and on Sundays (only some shopping is possible). Banks are closed in my region for as long as I can think about on weekends. (My father did work on Saturdays and Sundays, but as he was a steelworker and as blast-furnaces do not switch off on weekends, I wasn't used to a working week until I, myself started working)
ABAMBO | Hard- and Software Engineer | Photographer
Some banks offer limited services on Saturdays as a courtesy. But if you have a lost payment or need a loan, they tell you to come back on Monday - Friday when their full staff is there to help you.
We've always been advised that the process takes 7-10 business days, which means that weekends are excluded. The staff that processes payments doesn't work in weekends.