Why the time difference between the US and Europe is one hour shorter this week

For a week every October, people organizing international catch-ups and meetings on both sides of the Atlantic may be briefly confused: Did I just miss that conference call? Why is my grandmother calling me so early?

Most people quickly remember: It’s that strange time each fall when Europe and the United States are out of sync as they switch from daylight saving time to standard time.

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Most countries do not observe daylight saving time. And for those that do — mostly in Europe and North America — the dat