European Terrestrial Reference System 1989 (ETRS89)
ETRS89 is a Cartesian ECEF geodetic datum, in which Eurasian Plate as a whole is static. Within Europe, coordinates and maps based on ETRS89 are stable because temporal variations due to the continental drift are minimized. ETRS89 coincided with the global ITRS datum in 1989, hence the name. ETRS89 and ITRS diverge due to the continental drift at a speed about 2.5 cm per year.
Read more about this topic: Regional Reference Frame Sub-Commission For Europe
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