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Coordinate Reference Systems GR Greece Map Projection Geodetic Reference System
Coordinate Reference Systems Greece 
    • Position: 
Greek Geodetic Reference System 1987 - GGRS87 / ΕΓΣΑ87 (EGSA87)
(Hellenic Geodetic Reference System 1987)
Ellipsoid: GRS80
Map Projection: Transverse Mercator
Central Point/Datum: Observatory Athens/geocentric - ITRF 89
European Datum 1950 - ED50 
Ellipsoid: Hayford 1909/International 1924
Map Projection: UTM
Central Point/Datum: ED50 - (Potsdam)
Greek Datum  
Ellipsoid: Bessel 1841
Map Projection: Hatt (Azimuthal Equidistant)
Central Point/Datum: Observatory Athens
Large and Medium Scale Mapping:
Old System
Greek Geodetic Reference Sytem 1987 with TM
UTM on ED50
    • Height: 
Piraeus tidal gauge in Piraeus harbor
Reference Point: Piraeus harbor
Reference Level: ref_level