On the topic: Siri will ask you to clarify if you set a reminder too close to midnight. "Did you mean 11am tomorrow?" It also works on the other side: set a rem

On the topic: Siri will ask you to clarify if you set a reminder too close to midnight. "Did you mean 11am tomorrow?" It also works on the other side: set a reminder for "2" at 1am and it'll ask you to specify.