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# JARFRAKCI

La rezulto estas la nombro de la jaroj (inkluzive de frakcia parto) inter KomencoDato kaj FinoDato.

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

### Sintakso

YEARFRAC(StartDate; EndDate [; Basis])

StartDate and EndDate are two date values.

Basis (optional) is chosen from a list of options and indicates how the year is to be calculated.

Bazo | Kalkulado
--- | ---
0 or missing | Usona metodo (NASD), 12 monatoj po 30 tagoj
1 | Ekzakta nombro da tagoj en monatoj, ekzakta nombro da tagoj en jaro
2 | Ekzakta nombro da tagoj en monato, jaro havas 360 tagojn
3 | Ekzakta nombro da tagoj en monato, jaro havas 365 tagojn
4 | Eŭropa metodo, 12 monatoj po 30 tagoj

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.

### Ekzemploj

What fraction of the year 2008 lies between 2008-01-01 and 2008-07-01?

=YEARFRAC("2008-01-01"; "2008-07-01";0) returns 0.50.

Rilataj temoj

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