Downdetector says the top affected cities included Tokyo, New York City, Osaka, Chicago and Yokohama. The US accounted for the highest number of reports (more than 184,000), followed by Japan (129,000) and the UK (42,000). The peak window was 15:13 to 15:24 UTC, which translates to 10:13-10:24 a.m. ET and 7:13-7:24 a.m. PT.