British timekeeping has marked the end of an era with the switch to summer time in the early hours of Sunday.
The change at 0100 GMT was the last one to be signalled from Rugby, in Warwickshire, which has been the source of the time signal since 1927.
From 31 March, the long-wave signal, used to keep the "pips" heard on BBC radio services accurate, will start to be broadcast from Anthorn, Cumbria.
The contract to transmit the signal is switching from BT to VT Communications.
Users of the signal, such as emergency services, banks and mobile phone networks, should not notice any change.
BBC NEWS | Science/Nature | Time change marks end of an era