How long does it generally take for papers to be accepted?

Hello, I'll be applying this cycle and have a second author paper that is going to be submitted to Nature this month. All of the past papers in my lab have been accepted to Nature (around 8 or 9 since my PI is really well known in this field) so he's confident that this paper will be accepted as well. I put a TON of time into helping with the manuscript as well as with the experiments so I would really like to add this to my AMCAS in June, however, I'm not sure how long Nature takes to... How long does it generally take for papers to be accepted?
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