Unix measures time in seconds. Javascript measures in milliseconds. The conversion needs to be made and at the moment is ALWAYS being made. This conversion could be handled in 2 ways:

1. A new Field utility. Workflow would go as follows: attach field utility, in the field utility options select the other field that DOES return timestamps, select the field utility in the style plugin

2. Check box for each axis in style plugin. The style plugin would make the conversion where told to do so.