Need to add a test to the tests ( so that it shows in ST ), to make sure that
metazone names and abbreviations don't collide.
A common one is metazones "Israel" and "India" both use "IST" for the short
form. Metazone names have to be unique so that times will round trip when
parsing. In English, we tag one of the metazone abbreviations "IST (Israel)".