Index: applications/editors/josm/plugins/OpeningHoursEditor/src/org/openstreetmap/josm/plugins/ohe/gui/TimeRect.java
===================================================================
--- applications/editors/josm/plugins/OpeningHoursEditor/src/org/openstreetmap/josm/plugins/ohe/gui/TimeRect.java	(revision 30517)
+++ applications/editors/josm/plugins/OpeningHoursEditor/src/org/openstreetmap/josm/plugins/ohe/gui/TimeRect.java	(revision 30519)
@@ -289,9 +289,8 @@
                 if (transformDirections[transformType][0])
                     newMinutesStart = newMinutesStart + yDiff;
-                if (transformDirections[transformType][2]
-                        && !isOpenEndInterval())
+                if (transformDirections[transformType][2] && !isOpenEndInterval())
                     newMinutesEnd = newMinutesEnd + yDiff;
 
-                if (newMinutesStart >= 0
+                if (newMinutesStart >= 0 && newMinutesStart <= 24*60+1
                         && (newMinutesEnd <= 24 * 60 || isOpenEndInterval())) {
                     actualMinuteDrag += yDiff;