Aeria offices are based in PST/PDT. This is the time that AP promotions and GM events follow.
The game servers are based in EST. This is the time that TW/Arena and daily resets (such as salary and daily quests, etc.) follow.
I've made note of the reference to server time for each time zone/image in the OP. Hopefully this will help solve the confusion/problem for some of you. Some areas don't recognize certain time changes, so as stated before, these may not be 100% accurate for your area depending on what time changes you do or don't observe.