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# Date & Time Functions

These spreadsheet functions are used for inserting and editing dates and times.

Så här använder du det här kommandot...

Insert - Function - Category Date & Time

De funktioner vars namn slutar med _ADD eller _EXCEL2003 returnerar samma resultat som motsvarande funktioner i Microsoft Excel 2003 utan suffixen. Funktioner utan suffix ger resultat som är baserade på internationell standard.

LibreOffice internally handles a date/time value as a numerical value. If you assign the numbering format "Number" to a date or time value, it is converted to a number. For example, 2000-01-01 12:00 PM, converts to 36526.5. The value preceding the decimal point corresponds to the date; the value following the decimal point corresponds to the time. If you do not want to see this type of numerical date or time representation, change the number format (date or time) accordingly. To do this, select the cell containing the date or time value, call its context menu and select Format Cells. The Numbers tab page contains the functions for defining the number format.

## Datumbas för dag noll

Datum beräknas som förskjutningar från startdagen noll. Du kan ange dagen noll som något av följande:

Datumbas | Använd
--- | ---
'1899-12-30' | (standardvärde)
'1900-01-01' | (används i den tidigare StarCalc 1.0)
'1904-01-01' | (används i Apple-program)

Välj LibreOffice – Inställningar Verktyg – Alternativ – LibreOffice Calc – Beräkna om du vill markera datumbasen.

När du kopierar och klistrar in celler som innehåller datumvärden mellan olika tabeller, måste båda kalkylbladen ha samma datumbasinställning. Om dokumenten har olika datumbaser ändras de visade datumvärdena.

## Årtal med två siffror

In LibreOffice - Preferences Tools - Options - LibreOffice - General you find the area Year (two digits). This sets the period for which two-digit information applies. Note that changes made here have an effect on some of the following functions.

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.

Time zone information is not used in Date and Time functions and cells.

## Funktioner

Date & Time Functions

DATUM

DATEDIF

DATUMVÄRDE

DAG

DAGAR

DAGAR360

DAYSINMONTH

DAYSINYEAR

PÅSKDAGEN

EDATUM

SLUTMÅNAD

TIMME

ISLEAPYEAR

[text/scalc/01/func_isoweeknum.xhp#isoweeknum not found].

MINUT

MÅNAD

MONTHS

NETWORKDAYS

NETWORKDAYS.INTL

NU

SEKUND

KLOCKSLAG

TIDVÄRDE

IDAG

WEEKDAY

VECKONR

VECKONR_ADD

[text/scalc/01/func_weeknum_ooo.xhp#weeknum_ooo not found].

WEEKS

WEEKSINYEAR

ARBETSDAGAR

WORKDAY.INTL

ÅR

ÅRDEL

YEARS

Närliggande ämnen

Functions by Category

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