3 hours to JWST launch
Links:
Countdown clock: https://jwst.nasa.gov/content/webbLaunch/countdown.html
NASA Live Stream: https://youtube.com/watch?v=21X5lGlDOfg
NASA Twitter Feed: https://nitter.kavin.rocks/nasawebb?lang=en
Any launch issues should be mentioned on the Twitter feed or livestream.
IRL: InfraRed Launch!