The question comes down to was there any way you had 30 hours around your X day on the 7th. If you flew a trip that ended on the 6th and were free of reserve at 6 pm or earlier, then you would have had 30 hours. Either that had to have happened or you had to be notified (and should show on icrew) that you were released from LC/SC on the 6th no later than 6 pm. Or prior to finishing on the 6th you would have needed to have been notified of a 6 hour delay to the start of your reserve on the 8th.

If none of that happened then you will have a FAR 117 violation on the 10th unless they find another way tomorrow or the next day to give you 30 hours somewhere.