Thats why I specified off peak hours, since the mass amount of timezones gets complicated. This is what I see on my page. Looking at yours (if its different) choose the ones that are least likely to have many people on them. which for me is the 11pm- 4am options (1am-5am my time)
Updates on Character Creation Restrictions can be found here.
During periods of high congestion, we may institute a temporary restriction on the creation of new characters.
This information will be updated at the following intervals:
4:00 a.m./ 8:00 a.m./ 1:00 p.m./ 6:00 p.m./ 11:00 p.m. (PDT)