Today was a national science day for elementary students.
I say that because I assumed it was nationwide after two other foreigner English teachers said it was science day at their schools too.
So I had no classes.
When I asked my co-teacher about whether we had class today, she said 2nd, 3rd, and 4th period. That is when we normally have class. But not today. Today her classroom was empty. I waited a whole five minutes before leaving.