Siri lies.

I asked Siri how long I had until 3 am and she said a time that was incorrect. I need to get up that early so I can make it to my plane flight. I have the latest version of iOS which is 12.1.2 I think.i asked her on my iPad and she said the correct answer. I have an iPhone 8 Plus. I don’t know if that has anything to do with it. I’m just curious. I’m not trying to bug anyone. Thanks!