CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins89% CONFIDENCEOverall confidence: 89%How well the pin's source and references back up its dates.Weighted average of how firmly 3 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 better1.5 years ago
Happened as dated, per the source[1]: "King Charles III officially opened the Thames Tideway[3] Tunnel on May 7, 2025."King Charles III officially opened the Thames Tideway Tunnel, a 25km deep sewer built to stop billions of litres of sewage overflowing into the Thames each year.
$5B