Don't think that matters too much. I don't think they report it unless it's delinquent for long periods of time. You may get late fees.
We don't have a set amount of times or days we can give you ellie.spot01. If your friend is concerned about being late on the bill, we do have things like EasyPay that they can sign up for so they don't have to worry about it. Sign up for or cancel EasyPay. You can also look at payment arrangements in the event you need a little more time. Payment arrangement