<?xml version="1.0" encoding="UTF-8"?>
<!--***********************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************-->
<helpdocument version="1.0">
<meta>
<topic id="textsbasicshared03030120xhp" indexer="include" status="PUBLISH">
<title id="tit" xml-lang="en-US">DateDiff Function [Runtime]</title>
<filename>/text/sbasic/shared/03030120.xhp</filename>
</topic>
<history>
<created date="2005-04-25T13:20:42">DateDiff</created>
<lastedited date="2005-04-26T10:55:34">checked</lastedited>
</history>
</meta>
<body>
<section id="datediff">
<bookmark xml-lang="en-US" branch="index" id="bm_id6134830"><bookmark_value>DateDiff function</bookmark_value>
</bookmark>
<paragraph role="heading" id="par_idN10542" xml-lang="en-US" level="1" l10n="NEW"><link href="text/sbasic/shared/03030120.xhp">DateDiff Function [Runtime]</link></paragraph>
<paragraph role="paragraph" id="par_idN10546" xml-lang="en-US" l10n="NEW">Returns the number of date intervals between two given date values.</paragraph>
</section>
<paragraph role="heading" id="par_idN10549" xml-lang="en-US" level="2" l10n="NEW">Syntax:</paragraph>
<paragraph role="paragraph" id="par_idN10648" xml-lang="en-US" l10n="NEW">DateDiff (Add, Date1, Date2 [, Week_start [, Year_start]])</paragraph>
<paragraph role="heading" id="par_idN1064B" xml-lang="en-US" level="2" l10n="NEW">Return value:</paragraph>
<paragraph role="paragraph" id="par_idN1064F" xml-lang="en-US" l10n="NEW">A number.</paragraph>
<paragraph role="heading" id="par_idN10652" xml-lang="en-US" level="2" l10n="NEW">Parameters:</paragraph>
<paragraph role="paragraph" id="par_idN10656" xml-lang="en-US" l10n="NEW">
<emph>Add</emph> - A string expression from the following table, specifying the date interval.</paragraph>
<embed href="text/sbasic/shared/03030110.xhp#datetable"/>
<paragraph role="paragraph" id="par_idN10664" xml-lang="en-US" l10n="NEW">
<emph>Date1, Date2</emph> - The two date values to be compared.</paragraph>
<section id="weekyear">
<paragraph role="paragraph" id="par_idN1066A" xml-lang="en-US" l10n="NEW">
<emph>Week_start</emph> - An optional parameter that specifies the starting day of a week. </paragraph>
<table id="tbl_id8356883">
<tablerow>
<tablecell colspan="" rowspan="">
<paragraph role="tablehead" id="par_idN1067A" xml-lang="en-US" l10n="NEW">Week_start value</paragraph>
</tablecell>
<tablecell colspan="" rowspan="">
<paragraph role="tablehead" id="par_idN10680" xml-lang="en-US" l10n="NEW">Explanation</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN10687" xml-lang="en-US" l10n="NEW">0</paragraph>
</tablecell>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN1068D" xml-lang="en-US" l10n="NEW">Use system default value</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN10694" xml-lang="en-US" l10n="NEW">1</paragraph>
</tablecell>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN1069A" xml-lang="en-US" l10n="NEW">Sunday (default)</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN106A1" xml-lang="en-US" l10n="NEW">2</paragraph>
</tablecell>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN106A7" xml-lang="en-US" l10n="NEW">Monday</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN106AE" xml-lang="en-US" l10n="NEW">3</paragraph>
</tablecell>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN106B4" xml-lang="en-US" l10n="NEW">Tuesday</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN106BB" xml-lang="en-US" l10n="NEW">4</paragraph>
</tablecell>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN106C1" xml-lang="en-US" l10n="NEW">Wednesday</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN106C8" xml-lang="en-US" l10n="NEW">5</paragraph>
</tablecell>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN106CE" xml-lang="en-US" l10n="NEW">Thursday</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN106D5" xml-lang="en-US" l10n="NEW">6</paragraph>
</tablecell>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN106DB" xml-lang="en-US" l10n="NEW">Friday</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN106E2" xml-lang="en-US" l10n="NEW">7</paragraph>
</tablecell>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN106E8" xml-lang="en-US" l10n="NEW">Saturday</paragraph>
</tablecell>
</tablerow>
</table>
<paragraph role="paragraph" id="par_idN106EB" xml-lang="en-US" l10n="NEW">
<emph>Year_start</emph> - An optional parameter that specifies the starting week of a year. </paragraph>
<table id="tbl_id1173436">
<tablerow>
<tablecell colspan="" rowspan="">
<paragraph role="tablehead" id="par_idN106FB" xml-lang="en-US" l10n="NEW">Year_start value</paragraph>
</tablecell>
<tablecell colspan="" rowspan="">
<paragraph role="tablehead" id="par_idN10701" xml-lang="en-US" l10n="NEW">Explanation</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN10708" xml-lang="en-US" l10n="NEW">0</paragraph>
</tablecell>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN1070E" xml-lang="en-US" l10n="NEW">Use system default value</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN10715" xml-lang="en-US" l10n="NEW">1</paragraph>
</tablecell>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN1071B" xml-lang="en-US" l10n="NEW">Week 1 is the week with January, 1st (default)</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN10722" xml-lang="en-US" l10n="NEW">2</paragraph>
</tablecell>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN10728" xml-lang="en-US" l10n="NEW">Week 1 is the first week containing four or more days of that year</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN1072F" xml-lang="en-US" l10n="NEW">3</paragraph>
</tablecell>
<tablecell colspan="" rowspan="">
<paragraph role="tablecontent" id="par_idN10735" xml-lang="en-US" l10n="NEW">Week 1 is the first week containing only days of the new year</paragraph>
</tablecell>
</tablerow>
</table>
</section>
<paragraph role="heading" id="par_idN10738" xml-lang="en-US" level="2" l10n="NEW">Example:</paragraph>
<paragraph role="code" id="par_idN1073C" xml-lang="en-US" l10n="NEW">Sub example_datediff</paragraph>
<paragraph role="code" id="par_idN1073F" xml-lang="en-US" l10n="NEW">msgbox DateDiff("d", "1/1/2005", "12/31/2005")</paragraph>
<paragraph role="code" id="par_idN10742" xml-lang="en-US" l10n="NEW">End Sub</paragraph>
</body>
</helpdocument>