Various tweaks and minor refactoring, fixed issue #84

app/src/main/res/values/strings.xml

@@ -110,6 +110,7 @@
     <string name="map_visible">Visible</string>
     <string name="map_eclipsed">Eclipsed</string>
     <string name="map_visibility">Visibility: %s</string>
+    <string name="map_period">Period: %.0f min</string>
     <string name="map_phase">Phase: %.1f°</string>
     <string name="map_altitude">Altitude: %.0f km</string>
     <string name="map_distance">Distance: %.0f km</string>