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 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 better
Happened as dated, per the source[1]: "Skyscrapers taller than 150 meters are not allowed to be built in cities with less than 3 million people".China's housing ministry tightened its skyscraper rules nationwide, barring any new building over 150m in cities under 3 million people and capping larger cities at 250m.
1.00