business days.

A business day is considered every official working day of the week.The more common term is working day.Typically,these are the days between and including Monday to Friday and do not include public holidays and week-ends.
business days即营业日,working days为工作日,是更为通俗的business days.

usiness days 就是所说的工作日,针对全体人说的,不管某个人上没上班,都是business day ,不然就是 holiday
我理解working days 就工作的时间,不管是不是business day 只要工作,就叫working day