Geography
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Quick, look at the clock! _________ time is it? _________ it the same time in Australia? And the USA? No! This is because the Earth is round. When it’s day on one part of our planet, it’s night on another part. All over the world, people live at different times called time zones.
But _________ _________ we know what time it is in other countries? With Greenwich Mean Time (GMT)!
GMT began in 1675 when the English built the Royal Observatory in Greenwich, UK. It helped ships calculate longitude. Today the GMT is called Coordinated Universal Time (UTC). It is a standard reference for time everywhere in the world. _________ _________ we need a standard reference? To calculate the time in other countries!
