The projections I've seen estimate that the drift would reach about 1 hour in a millenia (i.e. around year 3000), ± few centuries. And I don't even know if 1 ho

The projections I've seen estimate that the drift would reach about 1 hour in a millenia (i.e. around year 3000), ± few centuries. And I don't even know if 1 hour difference really would be that significant, these days already some regions have their local time differ from solar time by over an hour (e.g. Argentina, Spain, large parts of China) because of timezone shenanigans.