Index: /trunk/src/org/openstreetmap/josm/gui/layer/geoimage/CorrelateGpxWithImages.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/layer/geoimage/CorrelateGpxWithImages.java	(revision 14980)
+++ /trunk/src/org/openstreetmap/josm/gui/layer/geoimage/CorrelateGpxWithImages.java	(revision 14981)
@@ -1175,5 +1175,5 @@
                 sldMinutes.setValue((int) (timezoneOffsetPair.b.getSeconds() / 60));
                 final long deciSeconds = timezoneOffsetPair.b.getMilliseconds() / 100;
-                sldSeconds.setValue((int) (deciSeconds % 60));
+                sldSeconds.setValue((int) (deciSeconds % 600));
             } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
                 Logging.warn(e);