Index: branches/5.3.x/core/units/helpers/cron_helper.php
===================================================================
diff -u -N -r15698 -r15928
--- branches/5.3.x/core/units/helpers/cron_helper.php	(.../cron_helper.php)	(revision 15698)
+++ branches/5.3.x/core/units/helpers/cron_helper.php	(.../cron_helper.php)	(revision 15928)
@@ -151,7 +151,7 @@
 			$short_time_format = str_replace(':s', '', $language->GetDBField('TimeFormat'));
 
 			for ($i = 0; $i <= 23; $i++) {
-				$ret[$i] = adodb_date($short_time_format, adodb_mktime($i, 0, 0)) . ' (' . $i . ')';
+				$ret[$i] = date($short_time_format, mktime($i, 0, 0)) . ' (' . $i . ')';
 			}
 		}
 		elseif ( $field_type == self::DAY ) {
@@ -324,7 +324,7 @@
 			$date = TIMENOW;
 		}
 
-		$next_run = strtotime('-' . (int)adodb_date('s', $date) . ' seconds', $date);
+		$next_run = strtotime('-' . (int)date('s', $date) . ' seconds', $date);
 		$expression_parts = explode(' ', $expression);
 
 		$cron_field = new kCronField();
@@ -570,7 +570,7 @@
 			$mapping[$field_type] = in_array(7, str_split($rule)) ? 'N' : 'w';
 		}
 
-		return (int)adodb_date($mapping[$field_type], $date);
+		return (int)date($mapping[$field_type], $date);
 	}
 
 	/**
@@ -658,22 +658,22 @@
 	{
 		if ( $field_type == kCronHelper::MONTH || $field_type == kCronHelper::WEEKDAY || $field_type == kCronHelper::DAY ) {
 			if ( $inverse ) {
-				$date = strtotime(adodb_date('Y-m-d 23:59:59', $date));
+				$date = strtotime(date('Y-m-d 23:59:59', $date));
 				// set time 23:59:00
 			}
 			else {
 				// set time 00:00:00
-				$date = strtotime(adodb_date('Y-m-d 00:00:00', $date));
+				$date = strtotime(date('Y-m-d 00:00:00', $date));
 			}
 		}
 		elseif ( $field_type == kCronHelper::HOUR ) {
 			if ( $inverse ) {
 				// set time <current_hour>:59:00
-				$date = strtotime(adodb_date('Y-m-d H:59:59', $date));
+				$date = strtotime(date('Y-m-d H:59:59', $date));
 			}
 			else {
 				// set time <current_hour>:00:00
-				$date = strtotime(adodb_date('Y-m-d H:00:00', $date));
+				$date = strtotime(date('Y-m-d H:00:00', $date));
 			}
 		}