Hello,
The date is processed directly by MySQL and because of that, the Joomla timezone is not processed.
We will see to improve that in a future release ; unfortunately I cannot provide you a patch like that since it would require a lot of tests to be sure that it will display the correct value.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.