You don’t need a perfect answer to “what time.” You need curiosity. You need a clear sky. You need a little luck.
Every night is a lottery. Sometimes you hit the jackpot. Sometimes you get a cloudy dud. That’s the fun of it.
So go ahead. Ask the question. Check the Kp-index. Stare at the north. And when the sky turns green? You’ll forget the time entirely. That’s the real magic.