It was 23 January on a schedule for the first ever flight of Boeing 777X. However, as Boeing had warned, the weather conditions around the Everett facility in Washington were not suitable today.

We are postponing the #777X first flight that was scheduled to take place tomorrow, Jan. 23, due to weather. The team is currently assessing the possibility of flying on January 24. Stay tuned for updates.

— Boeing Airplanes (@BoeingAirplanes) January 23, 2020

Nevertheless, just before the maiden flight, Boeing 777-9 was captured undergoing taxi and rejected take-off tests. Hopefully, the bird will soar the sky tomorrow, 24 January, 2020.