From my homes in San Diego and Palm Desert, I can often see the flights of rockets out of Vandenberg SFB, CA, US located 280 miles to the Northwest. I use the Space Launch Schedule app on my iPhone to receive advance notifications of their launches. You can filter notifications by location, so I also follow Starship launches out of Texas. I also use the Next Space Flight app at the time of launch, since it contains the most up-to-date information.