Is this company in a different time-zone? It could be an honest mistake. I'd ask them, they can't fault you for following up on the schedule, especially if you'

Is this company in a different time-zone? It could be an honest mistake. I'd ask them, they can't fault you for following up on the schedule, especially if you're clearly still interested. "Hello xyz, I noticed the meeting invite I got was for ... do you have any availability for ...? I'm unavailable during ..." Worst case they say "No unfortunately that's the only time slot we have" and you reschedule for another week or something?