Hello aspirant17,
Generally, case inquiry is set to 5 months, in today's example it's Nov 18, 2018, while the normal processing window is 3.5-5.5 months from filing date.
Outside Normal processing inquiry may work for you now, as your filing date is now even outside of the normal processing window of 3.5-5.5 months. Because earlier when you checked its outside the case inquiry date but still within the 3.5-5.5 month normal processing time - check and let us know (I couldn't try as I still don't qualify to raise inquiry based on my filing dates).