I was having a sleepover party. An actual sleepover party. I was extremely happy at the prospect of having an actual party, so I invited some of my friends.
It was very important that all of my friends could come, so I came about and tried to arrange a time that could suit everyone. Therefore I tried to arrange a time that everyone could come to.
In the beginning, I settled with Friday night and the guests leaving on Saturday morning. But after I told everyone (and everyone agreed), I remembered I had Chinese school on Saturday morning.