Best answer by Nancy_OVO
Depends what part of the Smart kit you're looking art. Is it the meter itself, or the In Home Display device?
During British Summer Time, the clock on the meter itself doesn't change, which would explain why the meter time doesn't change until 1am. We also send a request at 12 midnight to your meters to collect your readings for the day. Depending on the strength of signal we have with your meters, it could take between minutes and hours for the meter to respond, at which point the information on your In Home Display would update.
Hope this helps!