Wednesday, October 28, 2009

Daylight Savings Time

In 2006, the US Congress changed Daylight Savings Time so that it begins the first Sunday in March (instead of the 4th) and ends the first Sunday in November (instead of the 4th Sunday in October).

However, most of the rest of the world (including Europe) stuck with the old schedule.

What that means is that there are 4 weeks out of the year (3 weeks in March and one week at the end of October/beginning of November) in which the normal time zone differences are off by one.

Last weekend, Daylight Savings Time ended in Europe and the clocks rolled back an hour. However, it doesn't change in the US till this weekend.

Thus, for this week only (and for 3 weeks in March) there is only a 5 hour difference between Paris and home (EST) when normally there is a 6 hour difference.

Daylight Savings Time Around the World

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