diff --git a/htdocs/comm/action/index.php b/htdocs/comm/action/index.php
index a603010f46a..5396454667b 100644
--- a/htdocs/comm/action/index.php
+++ b/htdocs/comm/action/index.php
@@ -1716,7 +1716,7 @@ function show_day_events($db, $day, $month, $year, $monthshown, $style, &$eventa
 							// Hour start
 							if ($tmpyearstart == $annee && $tmpmonthstart == $mois && $tmpdaystart == $jour)
 							{
-								$daterange .= dol_print_date($event->date_start_in_calendar, 'hour'); // Il faudrait utiliser ici tzuser, mais si on ne peut pas car qd on rentre un date dans fiche action, en input la conversion local->gmt se base sur le TZ server et non user
+								$daterange .= dol_print_date($event->date_start_in_calendar, 'hour', 'tzuser');
 								if ($event->date_end_in_calendar && $event->date_start_in_calendar != $event->date_end_in_calendar)
 								{
 									if ($tmpyearstart == $tmpyearend && $tmpmonthstart == $tmpmonthend && $tmpdaystart == $tmpdayend)
@@ -1736,7 +1736,7 @@ function show_day_events($db, $day, $month, $year, $monthshown, $style, &$eventa
 							if ($event->date_end_in_calendar && $event->date_start_in_calendar != $event->date_end_in_calendar)
 							{
 								if ($tmpyearend == $annee && $tmpmonthend == $mois && $tmpdayend == $jour)
-								$daterange .= dol_print_date($event->date_end_in_calendar, 'hour'); // Il faudrait utiliser ici tzuser, mais si on ne peut pas car qd on rentre un date dans fiche action, en input la conversion local->gmt se base sur le TZ server et non user
+								$daterange .= dol_print_date($event->date_end_in_calendar, 'hour', 'tzuser');
 							}
 						} else {
 							if ($showinfo)