Clocks Change 2024 Dates Ukraine. Six use hydrogen, which can be more stable in the short term, and several use rubidium, though none of the latter contribute to ukraine’s time. On 27 october clocks will turn back by one hour, as we change from british summer time (bst).
European clocks are now on: Six use hydrogen, which can be more stable in the short term, and several use rubidium, though none of the latter contribute to ukraine’s time.