I'm asked to convert coordinates from the WGS 84 UTM 33N system to the ETRS89 with epoch 2018.5. So from a projected to a geographic system. I have no idea how to start with this.
I know UTM = ETRS in the year 1989 but since then has shifted and i need to use a calculation with different parameters. But thats all. So any help would be very helpfull.