Hello I am back again... I have a question...

When is the EARLIEST possible time for me to apply for ILR? On what particular date can I apply the 28 days before my 2 qualifying years? Can I apply earlier than 28 OCTOBER 2013?

My spouse visa is effective from 23 November 2011 until 23 February 2014. I arrived here in the UK on 25 November 2011.

Please advise. Thank you and God bless everyone.