proj4.defs("EPSG:9945","+proj=tmerc +lat_0=0 +lon_0=21 +k=0.9999 +x_0=500000 +y_0=-4000000 +ellps=bessel +towgs84=517.4399,228.7318,579.7954,-4.045,-4.304,15.612,-8.312 +units=m +no_defs +type=crs");