diff --git a/xsl/date.xsl b/xsl/date.xsl
index a0d0a74b3..21ae6e2b3 100644
--- a/xsl/date.xsl
+++ b/xsl/date.xsl
@@ -256,6 +256,8 @@
   <!--xsl:param name="seconds" /-->
 
   <xsl:variable name="dayofweek">
+	<!-- http://www.xsltfunctions.com/xsl/functx_day-of-week.html -->
+	<!-- functx:day-of-week returns the day of the week as a number, where 0 is Sunday, 1 is Monday... -->
     <xsl:value-of select="date:day-in-week($date)"/>
     <!--xsl:call-template name="get-dayofweek">
       <xsl:with-param name="seconds" select="$seconds" />
@@ -263,13 +265,13 @@
   </xsl:variable>
 
   <xsl:choose>
-    <xsl:when test="$dayofweek = 2">Montag</xsl:when>
-    <xsl:when test="$dayofweek = 3">Dienstag</xsl:when>
-    <xsl:when test="$dayofweek = 4">Mittwoch</xsl:when>
-    <xsl:when test="$dayofweek = 5">Donnerstag</xsl:when>
-    <xsl:when test="$dayofweek = 6">Freitag</xsl:when>
-    <xsl:when test="$dayofweek = 7">Samstag</xsl:when>
-    <xsl:when test="$dayofweek = 1">Sonntag</xsl:when>
+    <xsl:when test="$dayofweek = 0">Sonntag</xsl:when>
+    <xsl:when test="$dayofweek = 1">Montag</xsl:when>
+    <xsl:when test="$dayofweek = 2">Dienstag</xsl:when>
+    <xsl:when test="$dayofweek = 3">Mittwoch</xsl:when>
+    <xsl:when test="$dayofweek = 4">Donnerstag</xsl:when>
+    <xsl:when test="$dayofweek = 5">Freitag</xsl:when>
+    <xsl:when test="$dayofweek = 6">Samstag</xsl:when>
   </xsl:choose>
 </xsl:template>