Yahoo Mail Timezone

For a while now Yahoo mail has popped up a box saying different time zone detected.

Looked around for a plausible sounding reason and solution, found some discussion, but didn't find anything persuasive. 


Other methods of checking location are pretty consistent, and do not agree that the time zone has changed. 

Any ideas? Thanks.

Are you using the beta mail or the Classic mail?

Just read somewhere it can be caused by using the beta version.

Thanks. I did see that. I have been using whatever this is since I can remember.

Think it is the beta but don't remember agreeing to it, not sure, will check. Thanks.