I have heard of some people getting their interview notice after the date of the interview. Unfortunately, these things happen. I recommend everyone check the portal if they are able, and do not rely on mail delivery of notices. When we got her notice for biometrics, it was about 3-4 weeks before in the portal. Perfect, I took the day off work so I could take her down there. However, the snail mail notice came the week before. I may not have been able to take off work on such short notice. A little to close for comfort.