If Orion is in Central time zone, then I believe the time period for an alert/report would also need to be central. The time is synced, so even if you have additional pollers the time zone should be the same on all. If the time isn't the same it tends to cause problems. Hope this helps.
I am also confused about time zones.
Today our server is on GMT +1h and daylight saving, we want to move it to GMT, what will happen with the data?
I hope I can have a good expiation before we do this.
Thanks in advance