Adjusting siri with clock app

So I use Siri to set an alarm on a regular basis. Recently something changed that I don’t know how to switch back. Here’s hey scenario: it is 3 PM. I use Siri to set my alarm for 4:00, an hour later. Instead of turning on an alarm for 4 PM, it will set one for 4 AM, completely passing the time I intended. I didn’t see the clock app in settings. Is there a way to make sure it starts going for the next numeric time, instead of skipping the PM time?