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 4 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 betterEBSCO's[1] research starter dates the event 30 November 1999; Adhesives & Sealants Industry ('Exxon and Mobil completed their merger on November 30, 1999') and Wikipedia[2] ('deal closing on November 30, 1999') agree.
On 30 November 1999 Exxon and Mobil completed their merger, forming ExxonMobil and reuniting two of the largest fragments of John D. Rockefeller's Standard Oil trust.
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