diff --git a/fenixedu-ist-integration/src/main/java/pt/ist/fenixedu/integration/api/FenixAPIv1.java b/fenixedu-ist-integration/src/main/java/pt/ist/fenixedu/integration/api/FenixAPIv1.java
index 164b5a5084..4233448d7d 100644
--- a/fenixedu-ist-integration/src/main/java/pt/ist/fenixedu/integration/api/FenixAPIv1.java
+++ b/fenixedu-ist-integration/src/main/java/pt/ist/fenixedu/integration/api/FenixAPIv1.java
@@ -2187,10 +2187,12 @@ private FenixSpace.Room getFenixRoom(Space room, java.util.Calendar rightNow) {
                     String title = infoGenericEvent.getTitle();
                     String start = formatHour.print(infoGenericEvent.getInicio().getTimeInMillis());
                     String end = formatHour.print(infoGenericEvent.getFim().getTimeInMillis());
+                    String dayStart = formatDay.print(showOccupation.getInicio().getTimeInMillis());
+                    String dayEnd = formatDay.print(showOccupation.getFim().getTimeInMillis());
                     String weekday = infoGenericEvent.getDiaSemana().getDiaSemanaString();
-                    FenixPeriod period = new FenixPeriod(day + " " + start, day + " " + end);
+                    FenixPeriod period = new FenixPeriod(dayStart + " " + start, dayEnd + " " + end);
 
-                    roomEvent = new FenixRoomEvent.GenericEvent(start, end, weekday, day, period, description, title);
+                    roomEvent = new FenixRoomEvent.GenericEvent(start, end, weekday, dayStart, period, description, title);
                 }
 
                 if (roomEvent != null) {