2022 Opening Day Start Time?

Hello Astros Reddit!

I'm planning on visiting Texas (mainly Dallas) for the first time in end of March/early April, but want to fly into Houston at the beginning of my trip to go to Opening Day!

In years past, when do you usually know the time the game will start? What times have they started the past few opening days so I could get a feel for planning out my travel?

Thank y'all so much in advance!