Using ChatGPT to remind of things

So I had an idea of trying to get GPT4 to remind me to do something the next time i talked to it after a certain date and time. At first it said it couldn’t and I realized because it can’t timestamp it’s self yet. But it’s able to give me the time and date if I ask. So if in the same conversation I ask to always answer with the time and date first that I want then respond shouldn’t it be able to remind me of things. If I say remind me of something I need to do the next time I talk to you after a certain date in the future when I prompt you. I am getting it closer to it understanding what I want but I need some help. It keeps saying it can’t do it but I really think it can.

Pretty new at this but I think it could be cool if anyone wants to chat about it.