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	<id>https://tech.komputilo.org/index.php?action=history&amp;feed=atom&amp;title=Converting_Gregorian_dates_to_day_numbers</id>
	<title>Converting Gregorian dates to day numbers - Revision history</title>
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	<updated>2026-04-17T18:39:46Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://tech.komputilo.org/index.php?title=Converting_Gregorian_dates_to_day_numbers&amp;diff=762&amp;oldid=prev</id>
		<title>Joosteto: Created page with &quot; &lt;nowiki&gt; def calcday(y, m, d):     &quot;&quot;&quot;     Return days since 2000-01-01     y: year     m: month (1=jan)     d: day (1=first day of month)     &quot;&quot;&quot;      #return m*30 + (m+(m&gt;7...&quot;</title>
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		<updated>2022-02-13T20:36:22Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot; &amp;lt;nowiki&amp;gt; def calcday(y, m, d):     &amp;quot;&amp;quot;&amp;quot;     Return days since 2000-01-01     y: year     m: month (1=jan)     d: day (1=first day of month)     &amp;quot;&amp;quot;&amp;quot;      #return m*30 + (m+(m&amp;gt;7...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt; &amp;lt;nowiki&amp;gt;&lt;br /&gt;
def calcday(y, m, d):&lt;br /&gt;
    &amp;quot;&amp;quot;&amp;quot;&lt;br /&gt;
    Return days since 2000-01-01&lt;br /&gt;
    y: year&lt;br /&gt;
    m: month (1=jan)&lt;br /&gt;
    d: day (1=first day of month)&lt;br /&gt;
    &amp;quot;&amp;quot;&amp;quot; &lt;br /&gt;
    #return m*30 + (m+(m&amp;gt;7))//2+d - (m&amp;gt;2)*(2-(y%4==0))+365*y+(y-1)//4 - 730530&lt;br /&gt;
    return m*30 + 14*m//25+d - (m&amp;gt;2)*(2-(y%4==0))+365*y+(y-1)//4 - 730530&lt;br /&gt;
&amp;lt;/nowiki&amp;gt;&lt;/div&gt;</summary>
		<author><name>Joosteto</name></author>
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