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<section xml:id="datetime.configuration" xmlns="http://docbook.org/ns/docbook">
 &reftitle.runtime;
 &extension.runtime;
 <para>
  <table>
   <title>Date/Time Configuration Options</title>
   <tgroup cols="4">
    <thead>
     <row>
      <entry>&Name;</entry>
      <entry>&Default;</entry>
      <entry>&Changeable;</entry>
      <entry>&Changelog;</entry>
     </row>
    </thead>
    <tbody xml:id="datetime.configuration.list">
     <row>
      <entry><link linkend="ini.date.default-latitude">date.default_latitude</link></entry>
      <entry>"31.7667"</entry>
      <entry>PHP_INI_ALL</entry>
      <entry></entry>
     </row>
     <row>
      <entry><link linkend="ini.date.default-longitude">date.default_longitude</link></entry>
      <entry>"35.2333"</entry>
      <entry>PHP_INI_ALL</entry>
      <entry></entry>
     </row>
     <row>
      <entry><link linkend="ini.date.sunrise-zenith">date.sunrise_zenith</link></entry>
      <entry>"90.833333"</entry>
      <entry>PHP_INI_ALL</entry>
      <entry>Prior to PHP 8.0.0, the default was "90.583333"</entry>
     </row>
     <row>
      <entry><link linkend="ini.date.sunset-zenith">date.sunset_zenith</link></entry>
      <entry>"90.833333"</entry>
      <entry>PHP_INI_ALL</entry>
      <entry>Prior to PHP 8.0.0, the default was "90.583333"</entry>
     </row>
     <row>
      <entry><link linkend="ini.date.timezone">date.timezone</link></entry>
      <entry>"UTC"</entry>
      <entry>PHP_INI_ALL</entry>
      <entry>From PHP 8.2, a warning is emitted when setting this to an invalid
      value or an empty string.</entry>
     </row>
    </tbody>
   </tgroup>
  </table>
  &ini.php.constants;
 </para>

 &ini.descriptions.title;

 <para>
  <variablelist>
   <varlistentry xml:id="ini.date.default-latitude">
    <term>
     <parameter>date.default_latitude</parameter>
     <type>float</type>
    </term>
    <listitem>
     <para>
      The default latitude
      ranging from <literal>0</literal> at the equator,
      to <literal>+90</literal> northward, and <literal>-90</literal> southward.
     </para>
    </listitem>
   </varlistentry>

   <varlistentry xml:id="ini.date.default-longitude">
    <term>
     <parameter>date.default_longitude</parameter>
     <type>float</type>
    </term>
    <listitem>
     <para>
      The default longitude
      ranging from <literal>0</literal> at the prime meridian
      to <literal>+180</literal> eastward and <literal>−180</literal> westward.
     </para>
    </listitem>
   </varlistentry>

   <varlistentry xml:id="ini.date.sunrise-zenith">
    <term>
     <parameter>date.sunrise_zenith</parameter>
     <type>float</type>
    </term>
    <listitem>
     <para>
      The default sunrise zenith.
     </para>
     <para>
      The default value is 90°50'. The additional 50' is due to two
      components: the Sun's radius, which is 16', and the atmospheric
      refraction, which is 34'.
     </para>
    </listitem>
   </varlistentry>

   <varlistentry xml:id="ini.date.sunset-zenith">
    <term>
     <parameter>date.sunset_zenith</parameter>
     <type>float</type>
    </term>
    <listitem>
     <para>
      The default sunset zenith.
     </para>
    </listitem>
   </varlistentry>

   <varlistentry xml:id="ini.date.timezone">
    <term>
     <parameter>date.timezone</parameter>
     <type>string</type>
    </term>
    <listitem>
     <para>
      The default timezone used by all date/time functions.
      The precedence order for which timezone is used if none
      is explicitly mentioned is described in the
      <function>date_default_timezone_get</function> page. See <xref
      linkend="timezones"/> for a list of supported timezones.
     </para>
    </listitem>
   </varlistentry>
  </variablelist>
 </para>
 <note>
  <simpara>
   The first four configuration options are currently only used by
   <function>date_sunrise</function> and <function>date_sunset</function>.
  </simpara>
 </note>
</section>

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