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# NRO.SEMAJNO.ISO

NRO.SEMAJNO.ISO kalkulas la numeron de la semajno en la jaro por la interna data valoro.

The International Standard ISO 8601 has decreed that Monday shall be the first day of the week. A week that lies partly in one year and partly in another is assigned a number in the year in which most of its days lie. That means that week number 1 of any year is the week that contains the January 4th.

Ĉi tiu funkcio disponeblas ekde versio 5.1 de LibreOffice.

This function is part of the Open Document Format for Office Applications (OpenDocument) standard Version 1.2. (ISO/IEC 26300:2-2015)

### Sintakso

NRO.SEMAJNO.ISO(numero)

Number is the internal date number.

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 - Preferences Tools - Options - LibreOffice Calc - Formula, button Details... in section "Detailed Calculation Settings", Conversion from text to number list box.

### Ekzemploj

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

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

Rilataj temoj

ISOWEEKNUM wiki page.

Date & Time Functions

DATO

DATOSE

DATOVALORO

TAGO

TAGOJ

TAGOJ360

DAYSINMONTH

DAYSINYEAR

PASKADIMANĈO

FINDAT

MONFIN

HORO

ISLEAPYEAR

NRO.SEMAJNO.ISO

MINUTO

MONATO

MONTHS

NETWORKDAYS

NETWORKDAYS.INTL

NUN

SEKUNDO

HORO

TEMPOVALORO

HODIAŬ

WEEKDAY

NRO.SEMAJNO

SEMAJNONUMERO_ADD

NRO.SEMAJNO.OOO

WEEKS

WEEKSINYEAR

LABORTAGO

WORKDAY.INTL

JARO

JARFRAKCI

YEARS