BEIJING—The China Seismological Bureau on Sunday revised upward the magnitude of the May 12 earthquake, which was felt as far away as Bangkok, to 8.0 from 7.8 on the Richter scale, according to Xinhua news agency.

The US Geological Survey has put the magnitude of the tremor at 7.9, as has the Japan Meteorological Agency.

The magnitude was revised upward after Chinese specialists carried out detailed measurements of the earthquake, according to international practices, Xinhua reported.

The revision to 8.0 is bound to be noted by the superstitious. Eight is a lucky number in China, where the Beijing Olympics are set to open on Aug. 8—8/8/8—at 8:08 p.m.

The Internet has been abuzz with commentary on the fact that the earthquake, China’s most devastating in three decades, took place exactly 88 days before the Olympics’ opening ceremony.