As daylight saving ends in the UK for 2020, the horological conservator at Windsor Castle will be busy changing more than 400 clocks from the Royal Collection Trust.

For those of us with smartphones and smartwatches, the change to Greenwich Mean Time (GMT) on Sunday 25 October will happen automatically whilst we sleep. But for the hundreds of clocks in the Royal Collection at Windsor Castle, each one will need to be changed by hand to ensure accurate timekeeping for visitors and residents.

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