Continental European Power System has been experiencing, since mid-January, continuous significant power deviations due to shortage in supply from one transmission system operator of the interconnected system. All actions are taken by the TSOs of Continental Europe and by ENTSO-E to resolve the situation.
The power deviations have led to a slight drop in the electric frequency. This in turn has also affected those electric clocks that are steered by the frequency of the power system and not by a quartz crystal: they show currently a delay of 5 minutes. TSOs will set up a compensation program to correct the time in the future… More here.
Sometimes a good old fashioned mechanical watch or clock works best.