Trust return filling due date

Its 30th september

as per my opinion In case of tax audit due date of filling itr of trust is 30th september otherwise it would be 31st july. 

The trust are under the ambit of compulsory audit as government needs to know that whether the money expended by these organisations are as per non profit objectives, hence their date is 30th september

I agree with Saurabh,

due date of filling Income tax return is 30th September

According to section 139(1) where accounts of the assessee is required to be audited under any  Law, due date of submission of ITR is 30th September