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## WEEKDAY

Returns the day of the week for the given date value. The day is returned as an integer between 1 (Sunday) and 7 (Saturday) if no type or type=1 is specified. For other types, see the table below.

### Syntax

WEEKDAY(число; тип)

Аргумент число в качестве значения даты является десятичным представлением, для которого должен быть возвращен номер дня недели.

Type is optional and determines the type of calculation.

Type | Weekday number returned
1 or omitted | 1 (Sunday) through 7 (Saturday). For compatibility with Microsoft Excel.
2 | 1 (Monday) through 7 (Sunday).
3 | 0 (Monday) through 6 (Sunday)
11 | 1 (Monday) through 7 (Sunday).
12 | 1 (Tuesday) through 7 (Monday).
13 | 1 (Wednesday) through 7 (Tuesday).
14 | 1 (Thursday) through 7 (Wednesday).
15 | 1 (Friday) through 7 (Thursday).
16 | 1 (Saturday) through 7 (Friday).
17 | 1 (Sunday) through 7 (Saturday).

These values apply only to the standard date format that you select under LibreOffice - PreferencesTools - Options
- LibreOffice Calc - Calculate.

При вводе дат как части формул, косые черты или тире, используемые в качестве разделителей дат, интерпретируются как арифметические операторы. Поэтому даты, введенные в этом формате, не распознаются как даты и приводят к ошибочным вычислениям. Чтобы даты не интерпретировались как части формул, используйте функцию DATE, например DATE (1954;7;20) или поместите дату в кавычки и используйте нотацию ISO 8601, например "1954-07-20". Избегайте использования форматов даты, зависящих от локальных настроек, таких как "07/20/54", расчёт может привести к ошибкам, если документ загружен в соответствии с иными локальными настройками.

Unambiguous conversion is possible for ISO 8601 dates and times in their extended formats with separators. If a #VALUE! error occurs, then unselect Generate #VALUE! error in LibreOffice - PreferencesTools - Options
- LibreOffice Calc - Formula, button Details... in section "Detailed Calculation Settings", Conversion from text to number list box.

### Example

=WEEKDAY("2000-06-14") returns 4 (the Type parameter is missing, therefore the standard count is used. The standard count starts with Sunday as day number 1. June 14, 2000 was a Wednesday and therefore day number 4).

=WEEKDAY("1996-07-24";2) returns 3 (the Type parameter is 2, therefore Monday is day number 1. July 24, 1996 was a Wednesday and therefore day number 3).

=WEEKDAY("1996-07-24";1) returns 4 (the Type parameter is 1, therefore Sunday is day number 1. July 24, 1996 was a Wednesday and therefore day number 4).

=WEEKDAY("2017-05-02";14) returns 6 (the Type parameter is 14, therefore Thursday is day number 1. May 2, 2017 was a Tuesday and therefore day number 6)

=WEEKDAY(NOW()) returns the number of the current day.

To obtain a function indicating whether a day in A1 is a business day, use the IF and WEEKDAY functions as follows:
IF(WEEKDAY(A1;2)<6;"Business day";"Weekend")