Nine travellers’ watches that adjust to your timezone

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In 1931 the Swiss horologist Louis Cottier filed a patent for a wristwatch mechanism that would enable the wearer to see the time in cities across the world’s 24 time zones simultaneously. So was born what is known as the “world time” complication. Cottier went on to supply to brands from Patek Philippe to Rolex and Vacheron Constantin – and the skill has…