Weekend is an optional parameter – a number or a string used to specify the days of the week that are weekend days and are not considered working days. Weekend is a weekend number or string that specifies when weekends occur. Weekend number values indicate the following weekend days:

De 1 a 7 para fins de semana com dois dias e de 11 a 17 para fins de semana com um dia.

número	Weekend
1 ou omisso	sábado e domingo
2	domingo e segunda
3	segunda e terça
4	terça e quarta
5	quarta e quinta
6	quinta e sexta
7	sexta e sábado
11	apenas domingo
12	apenas segunda
13	apenas terça
14	apenas quarta
15	apenas quinta
16	apenas sexta
17	apenas sábado

Weekend string provides another way to define the weekly non-working days. It must have seven (7) characters – zeros (0) for working day and ones (1) for non-working day. Each character represents a day of the week, starting with Monday. Only 1 and 0 are valid. “1111111” is an invalid string and should not be used. For example, the weekend string “0000011” defines Saturday and Sunday as non-working days.

Holidays is an optional list of dates that must be counted as non-working days. The list can be given in a cell range.