What are Due dates of filing IT returns AY 2010-2011

DEAR IT IS 31ST JULY FOR INDIVIDUAL,HUF,FIRM, AOP,BOI.

AND 30TH SEP. FOR INDIVIDUAL,FIRM ETC WHITCH ARE LIABLE FOR AUDIT U/S 44AB AND FOR COMPANIES.

Where the assessee is a Company  ==>   September 30

Where the assessee is a persons other than Company -

a) Where the accounts are required to be audited  ==> September 30

b) Where the assessee is a working partner of a firm whose accounts are required to be audited ==> September 30

c) In Any other cases  ==> July 31