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38 lines
1.4 KiB
38 lines
1.4 KiB
13 years ago
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<sect2 id="calc-equinox">
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<title
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>Equinoxes and Solstices module</title>
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<indexterm
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><primary
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>Tools</primary>
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<secondary
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>Astrocalculator</secondary>
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<tertiary
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>Equinoxes and Solstices module</tertiary>
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</indexterm>
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<screenshot>
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<screeninfo
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>The Equinoxes and Solstices calculator module </screeninfo>
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<mediaobject>
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<imageobject>
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<imagedata fileref="calc-equinox.png" format="PNG"/>
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</imageobject>
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<textobject>
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<phrase
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>Equinoxes and Solstices</phrase>
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</textobject>
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</mediaobject>
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</screenshot>
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<para
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>The <link linkend="ai-equinox"
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>Equinoxes</link
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> and Solstices module calculates the date and time of an equinox or solstice for a given year. You specify which event (Spring Equinox, Summer Solstice, Autumn Equinox or Winter Solstice) should be investigated, and the year. Then press the <guibutton
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>Compute</guibutton
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> button to obtain the date and time of the event, and the length of the corresponding season, in days. </para>
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<para
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>There is a batch mode for this module. To use it, simply generate an input file whose lines each contain a year for which the Equinox and Solstice data will be computed. Then specify the input and output filenames, and press the <guibutton
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>Run</guibutton
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> button to generate the output file. Each line in the output file contains the input year, the date and time of each event, and the length of each season. </para>
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</sect2>
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