Use layers icon for different areas/time zones, some dates are approximate, these boundaries are derived from old S.I. texts, in the event of ambiguities inaccuracies or gaps may occur, particularly in the Port area. If an area name is not displayed, hover over the area with the mouse.
Use layers icon for different time periods.
Compiled by Brian Hollinshead. Base map data copyright OpenStreetMap Contributors. Please contact us for comments, corrections or omissions.