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David Porter » Entries tagged with "time"

Is the Clock Ticking for Greenwich Mean Time?

 Should time be called on British ownership of time, along with other old British measurements? Most Brits say ‘hands off our clocks!’ Greenwich Mean Time (GMT), also known as Greenwich Meridian Time, is symbolically marked by a line by the old Royal Observatory, Greenwich, London. Visitors walk along and around it, straddling it for fun. But it’s a serious, acknowledged base for measurement. When clocks change in spring and autumn, GMT remains constant, so time is either + or – GMT. It’s Longitude Zero degrees, and is deemed the mean (average) time the earth takes to revolve from noon to noon. It sets official time, and although there’s now atomic time (UTC), it‘s understood as a global reference point. It is used on the International Space Station, but there are 25 integer World … Read entire article »

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