Time and date issue when importing into Garmin Connect

Garmin Connect uses the “Island Time” and not GMT. Import into Strava is OK and shows GMT. How do I correct the time in GC? I have tried exporting the file out of Strava and importing into GC. I have used Golden Cheetah to change the time, save the file and import into GC. Still the same result.

Is there any way around this or is this a Garmin Connect issue and only they can solve it?

Have a look at my post, you can also change the time stamp with this tool,

https://support.zwift.com/hc/en-us/community/posts/203644813-upload-to-Garmin-Connect-using-fit-file 

You can also alter the time in Garmin coonect.

Which ever suites