proj4.defs("EPSG:10453","+proj=tmerc +lat_0=0 +lon_0=115.933333333333 +k=1.000019 +x_0=40000 +y_0=4000000 +ellps=GRS80 +nadgrids=GDA94_GDA2020_conformal_and_distortion.gsb +units=m +no_defs +type=crs");