diff --git a/course/format/weeks/format.php b/course/format/weeks/format.php
index 862cb89f019..eaad3d5c468 100644
--- a/course/format/weeks/format.php
+++ b/course/format/weeks/format.php
@@ -17,12 +17,6 @@
     define('BLOCK_L_MAX_WIDTH', $lmax);
     define('BLOCK_R_MIN_WIDTH', $rmin);
     define('BLOCK_R_MAX_WIDTH', $rmax);
-
-    // some defines for time periods (all are seconds)
-    define( 'SECONDS_ONEWEEK', 604800 );
-    define( 'SECONDS_SIXDAYS', 518400 );
-    define( 'SECONDS_TWOHOURS', 7200 );
-
   
     $preferred_width_left  = bounded_number(BLOCK_L_MIN_WIDTH, blocks_preferred_width($pageblocks[BLOCK_POS_LEFT]),  
                                             BLOCK_L_MAX_WIDTH);
@@ -139,10 +133,10 @@
 
     $timenow = time();
     $weekdate = $course->startdate;    // this should be 0:00 Monday of that week
-    $weekdate += SECONDS_TWOHOURS;     // Add two hours to avoid possible DST problems
+    $weekdate += 7200;                 // Add two hours to avoid possible DST problems
     $section = 1;
     $sectionmenu = array();
-    $weekofseconds = SECONDS_ONEWEEK;
+    $weekofseconds = 604800;
     $course->enddate = $course->startdate + ($weekofseconds * $course->numsections);
 
     $strftimedateshort = ' '.get_string('strftimedateshort');
@@ -151,7 +145,7 @@
 
         $nextweekdate = $weekdate + ($weekofseconds);
         $weekday = userdate($weekdate, $strftimedateshort);
-        $endweekday = userdate($weekdate+SECONDS_SIXDAYS, $strftimedateshort);
+        $endweekday = userdate($weekdate+518400, $strftimedateshort);
 
         if (!empty($sections[$section])) {
             $thissection = $sections[$section];
diff --git a/course/format/weekscss/format.php b/course/format/weekscss/format.php
index 335874ca35e..3c1c4c61dee 100644
--- a/course/format/weekscss/format.php
+++ b/course/format/weekscss/format.php
@@ -25,11 +25,6 @@
  */
 //TODO (nfreear): Accessibility: evaluation, lang/en_utf8/moodle.php: $string['formatweekscss']
 
-// some defines for time periods (all are seconds)
-define( 'SECONDS_ONEWEEK', 604800 );
-define( 'SECONDS_SIXDAYS', 518400 );
-define( 'SECONDS_TWOHOURS', 7200 );
-
     $week = optional_param('week', -1, PARAM_INT);
 
     if ($week != -1) {
@@ -146,10 +141,10 @@ define( 'SECONDS_TWOHOURS', 7200 );
 
     $timenow = time();
     $weekdate = $course->startdate;    // this should be 0:00 Monday of that week
-    $weekdate += SECONDS_TWOHOURS;                 // Add two hours to avoid possible DST problems
+    $weekdate += 7200;                 // Add two hours to avoid possible DST problems
     $section = 1;
     $sectionmenu = array();
-    $weekofseconds = SECONDS_ONEWEEK;
+    $weekofseconds = 604800;
     $course->enddate = $course->startdate + ($weekofseconds * $course->numsections);
 
     $strftimedateshort = ' '.get_string('strftimedateshort');
@@ -158,7 +153,7 @@ define( 'SECONDS_TWOHOURS', 7200 );
 
         $nextweekdate = $weekdate + ($weekofseconds);
         $weekday = userdate($weekdate, $strftimedateshort);
-        $endweekday = userdate($weekdate+SECONDS_SIXDAYS, $strftimedateshort);
+        $endweekday = userdate($weekdate+518400, $strftimedateshort);
 
         if (!empty($sections[$section])) {
             $thissection = $sections[$section];