Coldplay typically hits the stage between 8:45 PM and 9:00 PM. That’s the sweet spot, my friend. It’s late enough that the sun has gone down, but early enough that you’re not yawning into your glow wristband.
Yes, there’s usually a support act. They’ll start around 7:30 PM or so. But don’t stress—if you miss the opener, you’re not a bad fan. You’re just a punctual one who values a pre-show taco.