Hi @DrakonPrime, at the moment this is not something that Gibbon supports, and for programming and consistency reasons, its very important that the timestamps are accurate to the server. Otherwise, when calculating dates, if it was using a local timestamp this could cause errors of the code believing it was in the future. Because of this, it would also take significant code changes to make this possible and ensure it doesn’t cause errors.
One way that I have seen online LMSs deal with this is to always use a due date time of midnight of that day, so that it accounts for a wide range of timezones to be able to submit before the due date. This approach might help in your case.