diff --git a/trackfield_gpx.module b/trackfield_gpx.module
index 8594607..0751ba7 100644
--- a/trackfield_gpx.module
+++ b/trackfield_gpx.module
@@ -25,8 +25,16 @@ function _trackfield_gpx_setcsv(&$item) {
         $lat = trim($point->getAttributeNode('lat')->value);
         $lon = trim($point->getAttributeNode('lon')->value);
         $alt = trim($point->getElementsByTagName('ele')->item(0)->nodeValue);
+        /* Extract time from GPX */
+        $tim = trim($point->getElementsByTagName('time')->item(0)->nodeValue);
+        /* Convert time into number of seconds since start */
+        if ($tim) {
+          $tim = strtotime($tim);
+          if (!isset($csv)) { $tim_base = $tim; }
+          $tim = $tim - $tim_base;
+        }
         if (isset($csv)) { $csv .= ' '; }
-        $csv .= "$lon,$lat,$alt";
+        $csv .= "$lon,$lat,$alt,$tim";