CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins85% CONFIDENCEOverall confidence: 85%How well the pin's source and references back up its dates.Weighted average of how firmly 5 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better
The London Transport Museum and Britannica[4] both date the Metropolitan Railway's opening between Paddington and Farringdon to January 10, 1863.The Metropolitan Railway opened between Paddington and Farringdon on January 10, 1863, the world's first underground railway and the ancestor of every metro system shown in Moving Millions Every Day.
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