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<h1><a href="../index.html">MIT Kerberos Documentation</a></h1>
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<section id="supported-date-and-time-formats">
<span id="datetime"></span><h1>Supported date and time formats<a class="headerlink" href="#supported-date-and-time-formats" title="Link to this heading">¶</a></h1>
<section id="time-duration">
<span id="duration"></span><h2>Time duration<a class="headerlink" href="#time-duration" title="Link to this heading">¶</a></h2>
<p>This format is used to express a time duration in the Kerberos
configuration files and user commands. The allowed formats are:</p>
<blockquote>
<div><table class="docutils align-default">
<tbody>
<tr class="row-odd"><td><p>Format</p></td>
<td><p>Example</p></td>
<td><p>Value</p></td>
</tr>
<tr class="row-even"><td><p>h:m[:s]</p></td>
<td><p>36:00</p></td>
<td><p>36 hours</p></td>
</tr>
<tr class="row-odd"><td><p>NdNhNmNs</p></td>
<td><p>8h30s</p></td>
<td><p>8 hours 30 seconds</p></td>
</tr>
<tr class="row-even"><td><p>N (number of seconds)</p></td>
<td><p>3600</p></td>
<td><p>1 hour</p></td>
</tr>
</tbody>
</table>
</div></blockquote>
<p>Here <em>N</em> denotes a number, <em>d</em> - days, <em>h</em> - hours, <em>m</em> - minutes,
<em>s</em> - seconds.</p>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>The time interval should not exceed 2147483647 seconds.</p>
</div>
<p>Examples:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Request</span> <span class="n">a</span> <span class="n">ticket</span> <span class="n">valid</span> <span class="k">for</span> <span class="n">one</span> <span class="n">hour</span><span class="p">,</span> <span class="n">five</span> <span class="n">hours</span><span class="p">,</span> <span class="mi">30</span> <span class="n">minutes</span>
<span class="ow">and</span> <span class="mi">10</span> <span class="n">days</span> <span class="n">respectively</span><span class="p">:</span>
<span class="n">kinit</span> <span class="o">-</span><span class="n">l</span> <span class="mi">3600</span>
<span class="n">kinit</span> <span class="o">-</span><span class="n">l</span> <span class="mi">5</span><span class="p">:</span><span class="mi">00</span>
<span class="n">kinit</span> <span class="o">-</span><span class="n">l</span> <span class="mi">30</span><span class="n">m</span>
<span class="n">kinit</span> <span class="o">-</span><span class="n">l</span> <span class="s2">"10d 0h 0m 0s"</span>
</pre></div>
</div>
</section>
<section id="getdate-time">
<span id="getdate"></span><h2>getdate time<a class="headerlink" href="#getdate-time" title="Link to this heading">¶</a></h2>
<p>Some of the kadmin and kdb5_util commands take a date-time in a
human-readable format. Some of the acceptable date-time
strings are:</p>
<blockquote>
<div><table class="docutils align-default">
<thead>
<tr class="row-odd"><th class="head"></th>
<th class="head"><p>Format</p></th>
<th class="head"><p>Example</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td rowspan="3"><p>Date</p></td>
<td><p>mm/dd/yy</p></td>
<td><p>07/27/12</p></td>
</tr>
<tr class="row-odd"><td><p>month dd, yyyy</p></td>
<td><p>Jul 27, 2012</p></td>
</tr>
<tr class="row-even"><td><p>yyyy-mm-dd</p></td>
<td><p>2012-07-27</p></td>
</tr>
<tr class="row-odd"><td rowspan="2"><p>Absolute
time</p></td>
<td><p>HH:mm[:ss]pp</p></td>
<td><p>08:30 PM</p></td>
</tr>
<tr class="row-even"><td><p>hh:mm[:ss]</p></td>
<td><p>20:30</p></td>
</tr>
<tr class="row-odd"><td><p>Relative
time</p></td>
<td><p>N tt</p></td>
<td><p>30 sec</p></td>
</tr>
<tr class="row-even"><td rowspan="2"><p>Time zone</p></td>
<td><p>Z</p></td>
<td><p>EST</p></td>
</tr>
<tr class="row-odd"><td><p>z</p></td>
<td><p>-0400</p></td>
</tr>
</tbody>
</table>
</div></blockquote>
<p>(See <a class="reference internal" href="#abbreviation"><span class="std std-ref">Abbreviations used in this document</span></a>.)</p>
<p>Examples:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Create</span> <span class="n">a</span> <span class="n">principal</span> <span class="n">that</span> <span class="n">expires</span> <span class="n">on</span> <span class="n">the</span> <span class="n">date</span> <span class="n">indicated</span><span class="p">:</span>
<span class="n">addprinc</span> <span class="n">test1</span> <span class="o">-</span><span class="n">expire</span> <span class="s2">"3/27/12 10:00:07 EST"</span>
<span class="n">addprinc</span> <span class="n">test2</span> <span class="o">-</span><span class="n">expire</span> <span class="s2">"January 23, 2015 10:05pm"</span>
<span class="n">addprinc</span> <span class="n">test3</span> <span class="o">-</span><span class="n">expire</span> <span class="s2">"22:00 GMT"</span>
<span class="n">Add</span> <span class="n">a</span> <span class="n">principal</span> <span class="n">that</span> <span class="n">will</span> <span class="n">expire</span> <span class="ow">in</span> <span class="mi">30</span> <span class="n">minutes</span><span class="p">:</span>
<span class="n">addprinc</span> <span class="n">test4</span> <span class="o">-</span><span class="n">expire</span> <span class="s2">"30 minutes"</span>
</pre></div>
</div>
</section>
<section id="absolute-time">
<span id="abstime"></span><h2>Absolute time<a class="headerlink" href="#absolute-time" title="Link to this heading">¶</a></h2>
<p>This rarely used date-time format can be noted in one of the
following ways:</p>
<blockquote>
<div><table class="docutils align-default">
<thead>
<tr class="row-odd"><th class="head"><p>Format</p></th>
<th class="head"><p>Example</p></th>
<th class="head"><p>Value</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><p>yyyymmddhhmmss</p></td>
<td><p>20141231235900</p></td>
<td rowspan="5"><p>One minute
before 2015</p></td>
</tr>
<tr class="row-odd"><td><p>yyyy.mm.dd.hh.mm.ss</p></td>
<td><p>2014.12.31.23.59.00</p></td>
</tr>
<tr class="row-even"><td><p>yymmddhhmmss</p></td>
<td><p>141231235900</p></td>
</tr>
<tr class="row-odd"><td><p>yy.mm.dd.hh.mm.ss</p></td>
<td><p>14.12.31.23.59.00</p></td>
</tr>
<tr class="row-even"><td><p>dd-month-yyyy:hh:mm:ss</p></td>
<td><p>31-Dec-2014:23:59:00</p></td>
</tr>
<tr class="row-odd"><td><p>hh:mm:ss</p></td>
<td><p>20:00:00</p></td>
<td rowspan="2"><p>8 o’clock in
the evening</p></td>
</tr>
<tr class="row-even"><td><p>hhmmss</p></td>
<td><p>200000</p></td>
</tr>
</tbody>
</table>
</div></blockquote>
<p>(See <a class="reference internal" href="#abbreviation"><span class="std std-ref">Abbreviations used in this document</span></a>.)</p>
<p>Example:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Set</span> <span class="n">the</span> <span class="n">default</span> <span class="n">expiration</span> <span class="n">date</span> <span class="n">to</span> <span class="n">July</span> <span class="mi">27</span><span class="p">,</span> <span class="mi">2012</span> <span class="n">at</span> <span class="mi">20</span><span class="p">:</span><span class="mi">30</span>
<span class="n">default_principal_expiration</span> <span class="o">=</span> <span class="mi">20120727203000</span>
</pre></div>
</div>
<section id="abbreviations-used-in-this-document">
<span id="abbreviation"></span><h3>Abbreviations used in this document<a class="headerlink" href="#abbreviations-used-in-this-document" title="Link to this heading">¶</a></h3>
<div class="line-block">
<div class="line"><em>month</em> : locale’s month name or its abbreviation;</div>
<div class="line"><em>dd</em> : day of month (01-31);</div>
<div class="line"><em>HH</em> : hours (00-12);</div>
<div class="line"><em>hh</em> : hours (00-23);</div>
<div class="line"><em>mm</em> : in time - minutes (00-59); in date - month (01-12);</div>
<div class="line"><em>N</em> : number;</div>
<div class="line"><em>pp</em> : AM or PM;</div>
<div class="line"><em>ss</em> : seconds (00-60);</div>
<div class="line"><em>tt</em> : time units (hours, minutes, min, seconds, sec);</div>
<div class="line"><em>yyyy</em> : year;</div>
<div class="line"><em>yy</em> : last two digits of the year;</div>
<div class="line"><em>Z</em> : alphabetic time zone abbreviation;</div>
<div class="line"><em>z</em> : numeric time zone;</div>
</div>
<div class="admonition note">
<p class="admonition-title">Note</p>
<ul class="simple">
<li><p>If the date specification contains spaces, you may need to
enclose it in double quotes;</p></li>
<li><p>All keywords are case-insensitive.</p></li>
</ul>
</div>
</section>
</section>
</section>
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<h2>On this page</h2>
<ul>
<li><a class="reference internal" href="#">Supported date and time formats</a><ul>
<li><a class="reference internal" href="#time-duration">Time duration</a></li>
<li><a class="reference internal" href="#getdate-time">getdate time</a></li>
<li><a class="reference internal" href="#absolute-time">Absolute time</a><ul>
<li><a class="reference internal" href="#abbreviations-used-in-this-document">Abbreviations used in this document</a></li>
</ul>
</li>
</ul>
</li>
</ul>
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