So apparently I missed the Q&A at gamescom which I was really looking forward to seeing. In the thread, the specified time was 11:00-12:00 (CEST). Normally, am/pm is mentioned and even when filing reports, time zone is important.
So did I misunderstand? Is it military time? When looking at the Live Letter announcements on Lodestone, it reads "Wednesday, August 7, 2019 at 4:00 a.m. (PDT)" Very specific, and clear for conversion.