This is just the name you choose for the location. Latitudes run from -90.00 at the South pole to 90.0 at the North pole. Longitudes run from -180.00 to 180.00 . You can obtain latitude and longitude information from an atlas or GPS device or you can look it up on the web. By knowing the magnetic declination at a location, Ephemeris can report azimuth angles for sunrise, sunset, moonrise and moonset as magnetic bearings so you can work directly from compass readings.
Magnetic declination varies with location on the earth and also changes very slowly with time.
While time zones are normally integers, in some locations time zones are fractional. The following table lists the daylight savings time rules for various countries. This program may be redistributed free of charge as long as the entire program and its accompanying help file are copied intact, including this notice.