Unfortunately we have no way of knowing when the closing date for a puzzle may be (or whether there is a date at all, as a lot of daily puzzles are 'just for fun') In a way, this is irrelevant anyway, as folks only tend to ask for help here 'as a last resort', and that will vary from solver to solver depending on individual abilities. I think the ethos of this board is that it is for the mutual benefit of all contributors - there tends to be give and take over the long term, and with experience newer contributors will improve and be able to offer more answers and less questions.
What do others think ?
C