Not that it will stop anyone from trying, myself included, but, they can easilly reject all claims, IMHO(See BOLD):
Rules
...The winning entry will be the one that is submitted during each Daily Period nearest to (but not before) the undisclosed time chosen by the Sponsor for the submission of the winning entry. Accordingly, you will be notified immediately if your entry was submitted at the time scheduled for the awarding of the Instant Daily Prize. Notwithstanding such notification, no Points shall be credited to the member's account until such time as the member's eligibility has been confirmed...
and
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