Legal help😩

So I need help! Halloween is coming up and my children’s father and I are split. It says he gets them this Halloween, but it doesn’t have a time frame for the weekend. It states on the weekdays he gets them from 3-7:30. Do we follow it for the weekend as well? And I forgot to mention he gets the kids every other weekend, but the weekend of Halloween is my weekend. So do I let him have them all of Halloween night or do we split it as if it were a weekday? I should have noted that he thinks he gets them for all day Saturday and Sunday and returning them Sunday evening.