I assume can still apply since the scheduled date has been postponed .
The previous dates were based on if the exams had taken place on its original date i.e oct24
Since the exam was postponed by one month the special session has also been postponed by one month
More over you have to know which subject you failed in order
to apply anyway
I suggest you send them an application and try your luck
Remember the exam takes place only in delhi and no other location