Timeline for the day of the September 11 attacks
The September 11 attacks of 2001, in addition to being a unique act of terrorism, constituted a media event on a scale not seen since the advent of civilian global satellite links. Instant worldwide reaction and debate were made possible by round-the-clock television news organizations and by the internet.
Source: Wikipedia — Timeline for the day of the September 11 attacks (CC BY-SA 4.0)