the plugin currently just reports the timestamps as they appear in the file - no calculation or conversion to/from UTC whatsoever is done.
Two options here:
- you can process the file with BaseCamp or a tool like GPSBabel and shift the timestamps as you need them. Both tools have functions for this.
- i could build an option into the plugin that would shift the timestamps in the plugin's output (something like "timeshift=-2").
The downside for the second option is: you need to specify this "shift" parameter for every track in the invocation code. From the information inside the GPX file, there is no way to tell how many hours your "jetlag" is (btw. nice name for this thread ).