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<title>Class Poco::Timezone</title>
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<meta name="copyright" content="Copyright (c) 2009, Applied Informatics Software Engineering GmbH and Contributors"/>
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<meta name="date" content="2009-11-24"/>
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<h1 class="namespace"><a href="Poco.html" class="namespace">Poco</a></h1>
<h1 class="symbol">class Timezone</h1>
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<div class="body">
<p>
<b>Library:</b> Foundation<br />
<b>Package:</b> DateTime<br />
<b>Header:</b> Poco/Timezone.h</p>
<h2>Description</h2>
<div class="description">
<p>This class provides information about the current timezone. </p>
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<h2>Member Summary</h2>
<p><b>Member Functions: </b><a href="Poco.Timezone.html#11204" title="Poco::Timezone::dst()">dst</a>, <a href="Poco.Timezone.html#11210" title="Poco::Timezone::dstName()">dstName</a>, <a href="Poco.Timezone.html#11205" title="Poco::Timezone::isDst()">isDst</a>, <a href="Poco.Timezone.html#11208" title="Poco::Timezone::name()">name</a>, <a href="Poco.Timezone.html#11209" title="Poco::Timezone::standardName()">standardName</a>, <a href="Poco.Timezone.html#11207" title="Poco::Timezone::tzd()">tzd</a>, <a href="Poco.Timezone.html#11203" title="Poco::Timezone::utcOffset()">utcOffset</a></p>
<h2>Member Functions</h2>
<h3><a name="11204">dst</a> <img src="images/static.gif" alt="static" title="static" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">static int dst();</p>
<div class="description">
<p>Returns the daylight saving time offset in seconds if daylight saving time is in use. </p>
<pre>local time = UTC + utcOffset() + dst().
</pre>
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<h3><a name="11210">dstName</a> <img src="images/static.gif" alt="static" title="static" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">static std::string dstName();</p>
<div class="description">
<p>Returns the timezone name if daylight saving time is in effect. </p>
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<h3><a name="11205">isDst</a> <img src="images/static.gif" alt="static" title="static" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">static bool isDst(<br /> const <a href="Poco.Timestamp.html" title="class Poco::Timestamp">Timestamp</a> & timestamp<br />);</p>
<div class="description">
<p>Returns true if daylight saving time is in effect for the given time. Depending on the operating system platform this might only work reliably for certain date ranges, as the C library's localtime() function is used. </p>
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<h3><a name="11208">name</a> <img src="images/static.gif" alt="static" title="static" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">static std::string name();</p>
<div class="description">
<p>Returns the timezone name currently in effect. </p>
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<h3><a name="11209">standardName</a> <img src="images/static.gif" alt="static" title="static" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">static std::string standardName();</p>
<div class="description">
<p>Returns the timezone name if not daylight saving time is in effect. </p>
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<h3><a name="11207">tzd</a> <img src="images/static.gif" alt="static" title="static" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">static int tzd();</p>
<div class="description">
<p>Returns the time zone differential for the current timezone. The timezone differential is computed as <a href="Poco.Timezone.html#11203" title="Poco::Timezone::utcOffset()">utcOffset</a>() + <a href="Poco.Timezone.html#11204" title="Poco::Timezone::dst()">dst</a>() and is expressed in seconds. </p>
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<h3><a name="11203">utcOffset</a> <img src="images/static.gif" alt="static" title="static" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">static int utcOffset();</p>
<div class="description">
<p>Returns the offset of local time to UTC, in seconds. </p>
<pre>local time = UTC + utcOffset() + dst().
</pre>
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<p class="footer">POCO C++ Libraries 1.3.6-all<br />
Copyright © 2009, <a href="http://pocoproject.org/" target="_blank">Applied Informatics Software Engineering GmbH and Contributors</a></p>
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