In irony is there is a difference between past appearances and future reality

In irony is there is a difference between past appearances and future reality?

Yes there is a difference

Past and Future are two different time zones. However, for something that is ironic, it can happen in your past, and then again in your future which doesn't necessarily make the situation different nor does it not make it ironic. So, no I'd say there's not much of a difference.