What time zone is Virtuemart?

Question

Joomla

In the lists of orders, the date of the order, the date of the order status change is displayed correctly according to the set Joomla time zone. But let's say I want to make a coupon and set the date and time of its publication, let's say from the 14th from 0:00, but it will start working 3 hours earlier, i.e. On the 13th at 21:00, also in income reports, orders that are placed at night fall on another day, although the date and time in the list of orders are real. Who faced such problem?