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Thanjavur: coordinates, UTM zone and magnetic declination

Survey data sheet for Thanjavur (India) for field work: coordinates, UTM zone, scale factor, grid convergence, today's magnetic declination and geoid undulation, computed for the city center.

Latitude10°47′06.8″ N
Longitude79°08′20.7″ E
Decimal degrees10.78523, 79.13909
UTM zone44N · MC 81° E
UTM (WGS 84)E 296,528 · N 1,192,851
Scale factor (k)1.000112
Grid convergence−0.3483°
Magnetic declination (today)1.38° W · +1.9′/year
Geoid undulation (EGM2008)N = −94.09 m
Approximate elevation57 m
Time zoneAsia/Kolkata (UTC+5:30)
Population291,067

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)

StationLocationDistance
GDKG GDKG00INDGadanki, India297 km
IISC IISC00INDBangalore, India302 km
SGOC SGOC00LKANarahenpita, Colombo, Sri Lanka440 km

Tools to use here

FAQ

What UTM zone is Thanjavur in?

Thanjavur is in UTM zone 44N, with central meridian 81° E. In WGS 84, the city center is at E 296,528 m and N 1,192,851 m.

What is the magnetic declination in Thanjavur?

Today the magnetic declination in Thanjavur is 1.38° W, changing by +1.9′ 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 Thanjavur?

The geoid undulation (EGM2008) in Thanjavur is N = −94.09 m. To convert a GNSS height (ellipsoidal, h) to an approximate orthometric height: H = h − N.

Cities near Thanjavur

© GeoNames (CC BY 4.0) · Unicode CLDR · WMM2025 (NOAA/BGS) · EGM2008 (NGA) · IGS

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