Mòdul
Contingut
Índex 🔎︎

## NUMSETMANA

WEEKNUM calculates the week number of the year for the internal date value as defined in ODF OpenFormula and compatible with other spreadsheet applications.

S'admeten dos tipus compatibles de sistema de numeració de setmanes:

Sistema | Description
Sistema 1 | The week containing January 1 is the first week of the year, and is numbered week 1.
Sistema 2 | The week containing the first Thursday of the year is the first week of the year, and is numbered week 1. That means that week number 1 of any year is the week that contains January 4th. ISO 8601 defines this system and that the week starts on Monday.

### Sintaxi

NUMSETMANA(Nombre; Mode)

Nombre és el número intern de la data.

Mode estableix el començament de la setmana i el sistema de numeració de la setmana. Aquest paràmetre és opcional, si s'omet el valor per defecte és 1.

Sistema | Mode | Dia de la setmana
Sistema 1 | 1 | Diumenge
2 | Dilluns
11 | Dilluns
12 | Dimarts
13 | Dimecres
14 | Dijous
15 | Divendres
16 | Dissabte
17 | Diumenge
Sistema 2 | 21 | Dilluns (ISO 8601)
150 | (ISO 8601, per a la interoperativitat amb el Gnumeric)

When entering dates as part of formulas, slashes or dashes used as date separators are interpreted as arithmetic operators. Therefore, dates entered in this format are not recognized as dates and result in erroneous calculations. To keep dates from being interpreted as parts of formulas use the DATE function, for example, DATE(1954;7;20), or place the date in quotation marks and use the ISO 8601 notation, for example, "1954-07-20". Avoid using locale dependent date formats such as "07/20/54", the calculation may produce errors if the document is loaded under different locale settings.

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.

### Exemple

=WEEKNUM(DATE(1995;1;1);1) returns 1

=WEEKNUM(DATE(1995;1;1);2) returns 52. If the week starts on Monday, Sunday belongs to the last week of the previous year.

=WEEKNUM(DATE(1995;1;1);21) returns 52. Week 1 starts on Monday, 1995-01-02.

=WEEKNUM(DATE(1999;1;1);21) returns 53. Week 1 starts on Monday, 1999-01-04.