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Description:
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Prior to the adoption of universally accepted time zones, the vast majority of settlements around the world observed local mean solar time. Because of variations in geographical longitude, this meant that different towns and cities had slightly differing time standards. Although Greenwich Mean Time had been established in 1675 to help mariners navigate at sea, no law existed to mandate its use for local time.
The arrival of the railways in the mid-19th Century increased the need for a standardised time across the network, since local time would differ in all the towns the train visited. In Great Britain, Greenwich ... |