Free or Personal FilesThruTheAir™ Cloud accounts have a single time-zone which is specified at the time you Sign Up. All times and dates on the FilesThruTheAir™ Cloud will be shown for your selected time-zone. 

In a Professional account, which accommodates multiple sites, you can specify a different time-zone for each location. When viewing data, event logs or device properties in a Professional account, times and dates are shown as local (i.e. at the sensor location).