diff --git a/htdocs/projet/activity/perday.php b/htdocs/projet/activity/perday.php
index 8897f9550a3..7e309ee2bf7 100644
--- a/htdocs/projet/activity/perday.php
+++ b/htdocs/projet/activity/perday.php
@@ -92,6 +92,10 @@ if ($year && $month && $day) {
 	$daytoparse = dol_mktime(0, 0, 0, $monthofday, $dayofday, $yearofday); // xxxofday is value of day after submit action 'addtime'
 }
 
+$daytoparsegmt = dol_now('gmt');
+if ($yearofday && $monthofday && $dayofday) $daytoparsegmt = dol_mktime(0, 0, 0, $monthofday, $dayofday, $yearofday, 'gmt'); // xxxofday is value of day after submit action 'addtime'
+elseif ($year && $month && $day) $daytoparsegmt = dol_mktime(0, 0, 0, $month, $day, $year, 'gmt'); // this are value submited after submit of action 'submitdateselect'
+
 if (empty($search_usertoprocessid) || $search_usertoprocessid == $user->id) {
 	$usertoprocess = $user;
 	$search_usertoprocessid = $usertoprocess->id;
@@ -614,6 +618,11 @@ $restrictviewformytask = ((!isset($conf->global->PROJECT_TIME_SHOW_TASK_NOT_ASSI
 
 // Get if user is available or not for each day
 $isavailable = array();
+
+// Assume from Monday to Friday if conf empty or badly formed
+$numstartworkingday = 1;
+$numendworkingday = 5;
+
 if (!empty($conf->global->MAIN_DEFAULT_WORKING_DAYS)) {
 	$tmparray = explode('-', $conf->global->MAIN_DEFAULT_WORKING_DAYS);
 	if (count($tmparray) >= 2) {
@@ -626,7 +635,7 @@ $statusofholidaytocheck = Holiday::STATUS_APPROVED;
 $isavailablefordayanduser = $holiday->verifDateHolidayForTimestamp($usertoprocess->id, $daytoparse, $statusofholidaytocheck); // $daytoparse is a date with hours = 0
 $isavailable[$daytoparse] = $isavailablefordayanduser; // in projectLinesPerWeek later, we are using $firstdaytoshow and dol_time_plus_duree to loop on each day
 
-$test = num_public_holiday($daytoparse, $daytoparse + 86400, $mysoc->country_code);
+$test = num_public_holiday($daytoparsegmt, $daytoparsegmt + 86400, $mysoc->country_code);
 if ($test) {
 	$isavailable[$daytoparse] = array('morning'=>false, 'afternoon'=>false, 'morning_reason'=>'public_holiday', 'afternoon_reason'=>'public_holiday');
 }
diff --git a/htdocs/projet/activity/perweek.php b/htdocs/projet/activity/perweek.php
index 2a27294bfed..d4ab6108b7e 100644
--- a/htdocs/projet/activity/perweek.php
+++ b/htdocs/projet/activity/perweek.php
@@ -95,7 +95,7 @@ $next_day   = $next['day'];
 
 // Define firstdaytoshow and lastdaytoshow (warning: lastdaytoshow is last second to show + 1)
 $firstdaytoshow = dol_mktime(0, 0, 0, $first_month, $first_day, $first_year);
-$lastdaytoshow = dol_time_plus_duree($firstdaytoshow, 7, 'd');
+$firstdaytoshowgmt = dol_mktime(0, 0, 0, $first_month, $first_day, $first_year, 'gmt');
 
 if (empty($search_usertoprocessid) || $search_usertoprocessid == $user->id) {
 	$usertoprocess = $user;
@@ -503,6 +503,11 @@ $startday = dol_mktime(12, 0, 0, $startdayarray['first_month'], $startdayarray['
 
 // Get if user is available or not for each day
 $isavailable = array();
+
+// Assume from Monday to Friday if conf empty or badly formed
+$numstartworkingday = 1;
+$numendworkingday = 5;
+
 if (!empty($conf->global->MAIN_DEFAULT_WORKING_DAYS)) {
 	$tmparray = explode('-', $conf->global->MAIN_DEFAULT_WORKING_DAYS);
 	if (count($tmparray) >= 2) {
@@ -513,25 +518,18 @@ if (!empty($conf->global->MAIN_DEFAULT_WORKING_DAYS)) {
 
 for ($idw = 0; $idw < 7; $idw++) {
 	$dayinloopfromfirstdaytoshow = dol_time_plus_duree($firstdaytoshow, $idw, 'd'); // $firstdaytoshow is a date with hours = 0
-
-	// Useless because $dayinloopwithouthours should be same than $dayinloopfromfirstdaytoshow
-	//$tmparray = dol_getdate($dayinloop);
-	//$dayinloopwithouthours=dol_mktime(0, 0, 0, $tmparray['mon'], $tmparray['mday'], $tmparray['year']);
-	//print dol_print_date($dayinloop, 'dayhour').' ';
-	//print dol_print_date($dayinloopwithouthours, 'dayhour').' ';
-	//print dol_print_date($dayinloopfromfirstdaytoshow, 'dayhour').'<br>';
+	$dayinloopfromfirstdaytoshowgmt = dol_time_plus_duree($firstdaytoshowgmt, $idw, 'd'); // $firstdaytoshow is a date with hours = 0
 
 	$statusofholidaytocheck = Holiday::STATUS_APPROVED;
 
 	$isavailablefordayanduser = $holiday->verifDateHolidayForTimestamp($usertoprocess->id, $dayinloopfromfirstdaytoshow, $statusofholidaytocheck);
 	$isavailable[$dayinloopfromfirstdaytoshow] = $isavailablefordayanduser; // in projectLinesPerWeek later, we are using $firstdaytoshow and dol_time_plus_duree to loop on each day
 
-	$test = num_public_holiday($dayinloopfromfirstdaytoshow, $dayinloopfromfirstdaytoshow + 86400, $mysoc->country_code);
+	$test = num_public_holiday($dayinloopfromfirstdaytoshowgmt, $dayinloopfromfirstdaytoshowgmt + 86400, $mysoc->country_code);
 	if ($test) {
 		$isavailable[$dayinloopfromfirstdaytoshow] = array('morning'=>false, 'afternoon'=>false, 'morning_reason'=>'public_holiday', 'afternoon_reason'=>'public_holiday');
 	}
 }
-//var_dump($isavailable);
 
 
 
@@ -663,13 +661,7 @@ if (!empty($arrayfields['timeconsumed']['checked'])) {
 }
 for ($idw = 0; $idw < 7; $idw++) {
 	$dayinloopfromfirstdaytoshow = dol_time_plus_duree($firstdaytoshow, $idw, 'd'); // $firstdaytoshow is a date with hours = 0
-	$dayinloop = dol_time_plus_duree($startday, $idw, 'd');
-	/*print $dayinloopfromfirstdaytoshow;
-	print dol_print_date($dayinloopfromfirstdaytoshow, 'dayhour', 'gmt');
-	print dol_print_date($dayinloopfromfirstdaytoshow, 'dayhour');
-	print dol_print_date($dayinloopfromfirstdaytoshow, '%a', 'gmt');
-	print dol_print_date($dayinloopfromfirstdaytoshow, '%a');
-	print '<br>';*/
+
 	$cssweekend = '';
 	if ((($idw + 1) < $numstartworkingday) || (($idw + 1) > $numendworkingday)) {	// This is a day is not inside the setup of working days, so we use a week-end css.
 		$cssweekend = 'weekend';