South Boston: coordinates, UTM zone and magnetic declination
Survey data sheet for South Boston (United States) for field work: coordinates, UTM zone, scale factor, grid convergence, today's magnetic declination and geoid undulation, computed for the city center.
Values for the city center (GeoNames coordinate). Declination from the World Magnetic Model 2025 for today's date; geoid from EGM2008. For an exact point, use the tools below.
Nearest GNSS reference stations (IGS)
Tools to use here
FAQ
What UTM zone is South Boston in?
South Boston is in UTM zone 19N, with central meridian 69° W. In WGS 84, the city center is at E 331,152 m and N 4,688,832 m.
What is the magnetic declination in South Boston?
Today the magnetic declination in South Boston is 13.92° W, changing by +4.2′ per year (WMM2025 model). To get the true azimuth, add the declination to the magnetic azimuth (East positive, West negative).
What is the geoid undulation in South Boston?
The geoid undulation (EGM2008) in South Boston is N = −28.64 m. To convert a GNSS height (ellipsoidal, h) to an approximate orthometric height: H = h − N.
Cities near South Boston
- Boston 3 km
- The Bronx 286 km
- Borough of Queens 296 km
- Manhattan 298 km
- New York 305 km
- Brooklyn 306 km
- Staten Island 324 km
- Philadelphia 434 km
- All cities in United States
© GeoNames (CC BY 4.0) · Unicode CLDR · WMM2025 (NOAA/BGS) · EGM2008 (NGA) · IGS