Русско-англо-русский юридический словарь

A business day is considered every official working day of the week. Another common term is working day. Typically, these are the days between and including Monday to Friday and do not include public holidays and weekends. (Wikipedia)

"The workweek and weekend are those complementary parts of the week devoted to labour and rest, respectively. The legal working week (British English), or workweek (American English), is the part of the seven-day week devoted to labour. In most of the Western world, it is Monday to Friday ( the weekend is Saturday and Sunday.")

Langney Priory, thought to be Eastbourne’s oldest building, is opening its doors to the public for a spring fair this weekend. (Eastbourne Herald)

This weekend the G7 leaders are likely to step up the pressure on Ethiopia and Eritrea to comply with their demands for immediate humanitarian action. (BBC News)