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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="API documentation for the Rust `offset` mod in crate `chrono`."><meta name="keywords" content="rust, rustlang, rust-lang, offset"><title>chrono::offset - Rust</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script src="../../storage.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="shortcut icon" href="../../favicon.ico"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc mod"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../chrono/index.html'><img src='../../rust-logo.png' alt='logo' width='100'></a><p class='location'>Module offset</p><div class="sidebar-elems"><div class="block items"><ul><li><a href="#structs">Structs</a></li><li><a href="#enums">Enums</a></li><li><a href="#traits">Traits</a></li></ul></div><p class='location'><a href='../index.html'>chrono</a></p><script>window.sidebarCurrent = {name: 'offset', ty: 'mod', relpath: '../'};</script><script defer src="../sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><a id="settings-menu" href="../../settings.html"><img src="../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='out-of-band'><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='../../src/chrono/offset/mod.rs.html#4-419' title='goto source code'>[src]</a></span><span class='in-band'>Module <a href='../index.html'>chrono</a>::<wbr><a class="mod" href=''>offset</a></span></h1><div class='docblock'><p>The time zone, which calculates offsets from the local time to UTC.</p>
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<p>There are four operations provided by the <code>TimeZone</code> trait:</p>
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<ol>
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<li>Converting the local <code>NaiveDateTime</code> to <code>DateTime<Tz></code></li>
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<li>Converting the UTC <code>NaiveDateTime</code> to <code>DateTime<Tz></code></li>
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<li>Converting <code>DateTime<Tz></code> to the local <code>NaiveDateTime</code></li>
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<li>Constructing <code>DateTime<Tz></code> objects from various offsets</li>
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</ol>
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<p>1 is used for constructors. 2 is used for the <code>with_timezone</code> method of date and time types.
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3 is used for other methods, e.g. <code>year()</code> or <code>format()</code>, and provided by an associated type
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which implements <code>Offset</code> (which then passed to <code>TimeZone</code> for actual implementations).
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Technically speaking <code>TimeZone</code> has a total knowledge about given timescale,
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but <code>Offset</code> is used as a cache to avoid the repeated conversion
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and provides implementations for 1 and 3.
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An <code>TimeZone</code> instance can be reconstructed from the corresponding <code>Offset</code> instance.</p>
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</div><h2 id='structs' class='section-header'><a href="#structs">Structs</a></h2>
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<table><tr class='module-item'><td><a class="struct" href="struct.FixedOffset.html" title='chrono::offset::FixedOffset struct'>FixedOffset</a></td><td class='docblock-short'><p>The time zone with fixed offset, from UTC-23:59:59 to UTC+23:59:59.</p>
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</td></tr><tr class='module-item'><td><a class="struct" href="struct.Local.html" title='chrono::offset::Local struct'>Local</a></td><td class='docblock-short'><p>The local timescale. This is implemented via the standard <code>time</code> crate.</p>
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</td></tr><tr class='module-item'><td><a class="struct" href="struct.Utc.html" title='chrono::offset::Utc struct'>Utc</a></td><td class='docblock-short'><p>The UTC time zone. This is the most efficient time zone when you don't need the local time.
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It is also used as an offset (which is also a dummy type).</p>
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</td></tr></table><h2 id='enums' class='section-header'><a href="#enums">Enums</a></h2>
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<table><tr class='module-item'><td><a class="enum" href="enum.LocalResult.html" title='chrono::offset::LocalResult enum'>LocalResult</a></td><td class='docblock-short'><p>The conversion result from the local time to the timezone-aware datetime types.</p>
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</td></tr></table><h2 id='traits' class='section-header'><a href="#traits">Traits</a></h2>
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<table><tr class='module-item'><td><a class="trait" href="trait.Offset.html" title='chrono::offset::Offset trait'>Offset</a></td><td class='docblock-short'><p>The offset from the local time to UTC.</p>
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</td></tr><tr class='module-item'><td><a class="trait" href="trait.TimeZone.html" title='chrono::offset::TimeZone trait'>TimeZone</a></td><td class='docblock-short'><p>The time zone.</p>
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