Why Is London 1 Hour Ahead of GMT During British Summer Time?

Discover why London is 1 hour ahead of GMT during daylight saving time with British Summer Time (BST) explained in simple terms.

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London is 1 hour ahead of GMT because it follows British Summer Time (BST) during daylight saving time, typically from the last Sunday in March to the last Sunday in October. During this period, clocks are set 1 hour forward to make better use of daylight. Outside of this period, London reverts to Greenwich Mean Time (GMT).

FAQs & Answers

  1. What is British Summer Time (BST)? British Summer Time (BST) is the daylight saving time in the UK where clocks are set 1 hour ahead of Greenwich Mean Time (GMT) to extend evening daylight during summer months.
  2. When does London switch between GMT and BST? London switches to British Summer Time from the last Sunday in March to the last Sunday in October and reverts back to Greenwich Mean Time for the rest of the year.
  3. Why does the UK observe daylight saving time? The UK observes daylight saving time to make better use of daylight during the longer days of summer, reducing energy consumption and providing more daylight in the evenings.

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