CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins90% CONFIDENCEOverall confidence: 90%How well the pin's source and references back up its dates.Weighted average of how firmly 1 reference, the source included, supports 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 source[1] dates it firmly — the earthquake "hit the Iberian Peninsula and Northwest Africa on the morning of Saturday, 1 November, Feast of All Saints, at around 09:40 local time". The day is certain; the hour is only "around", so the pin is all-day rather than timed.A magnitude 7.7-or-greater earthquake struck off Cape St. Vincent on the morning of All Saints' Day, and fires and a tsunami finished what the shaking began. Between 30,000 and 40,000 died in Lisbon alone.
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