You need 1095 days completed and need to sign on the 1096th day. I applied with 1095 days and got my citizenship.keesio said:hmmm... tricky. Note that you need 1096 days on the day that you signed the application. If on the signature date you have 1095 exactly, then I'm afraid you are one day short.
Either way, if the residency calculator tells you you have 1095 days, it's fine.