Patna: coordinates, UTM zone and magnetic declination
Survey data sheet for Patna (India) 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 Patna in?
Patna is in UTM zone 45N, with central meridian 87° E. In WGS 84, the city center is at E 312,761 m and N 2,832,048 m.
What is the magnetic declination in Patna?
Today the magnetic declination in Patna is 0.19° E, changing by +1.1′ 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 Patna?
The geoid undulation (EGM2008) in Patna is N = −64.56 m. To convert a GNSS height (ellipsoidal, h) to an approximate orthometric height: H = h − N.
Cities near Patna
- Bihār Sharīf 59 km
- Muzaffarpur 64 km
- Gaya 90 km
- Darbhanga 98 km
- Bhagalpur 188 km
- Varanasi 216 km
- Gorakhpur 219 km
- Bokaro 237 km
- All cities in India
© GeoNames (CC BY 4.0) · Unicode CLDR · WMM2025 (NOAA/BGS) · EGM2008 (NGA) · IGS