FlightRadar24 satellite image shows more than 202,000 planes flying in a single day.
The busiest day for commercial flights was recorded on June 29, with 202,157 planes swarming across the skies.
Flight Radar shared images of its tracking technology which shows a mass of planes almost covering the skies in a sea of yellow. The tweet has been retweeted more than 12,000 times.
FlightRadar24 said it was the busiest day this year, and the busiest day they had ever recorded.
It also said it was the first time the organization had ever tracked more than 200,000 flights in a day.
The global flight tracking organization was founded in 2006.
(Compiled by Yu Hongyu)