diff --git a/xsl/remind.xsl b/xsl/remind.xsl
index 68b1d7a24..6ba2c3abd 100644
--- a/xsl/remind.xsl
+++ b/xsl/remind.xsl
@@ -40,7 +40,12 @@
 
   <xsl:template match="end">
     <xsl:variable name="begin" select="string(../start[1])"/>
-    <xsl:variable name="end" select="string(.)"/>
+    <xsl:variable name="end">
+      <xsl:value-of select="string(.)"/>
+      <xsl:if test="not(contains(string(.), 'T'))">
+        <xsl:text>T23:59:59</xsl:text>
+      </xsl:if>
+    </xsl:variable>
     <xsl:variable name="duration" select="date:seconds(date:difference($begin, $end))"/>
 
     <!-- TODO: Fix duration of multi-day events where end date has no