I may be incorrect but as of yet I have never seen sea dragons spawn times between 00:00 and 06:00 server time.
I find this highly inconvenient and a blatant disregard to your oceanic customer base. I understand we are not your primary target for marketing, but I know of quite a few players in the oceanic time slot that would have spent a magnitude of $$ on this game to rival a very large percentage of your player group.
In solution I suggest 3 out of 7 days of the week you spawn the dragons in this time bracket so I may continue to waste my energy pots during the week instead of dusting them off for Solomon's mines on weekend.