Ovulation timing. Help?

Ka

So the 26th was my predicted ovulation day, and the 27th is the final day of my fertile window. We had unprotected sex at 12:30am on the 27th (literally JUST the start of the 27th). Would that still be considered my ovulation day and as high as a chance of conception? I’m not quite sure when ovulation peeks throughout the day or how long it lasts. Any answers would be appreciated!