I have had nothing but problems with the Forerunner735XT for the past 2 weeks. The date and time changed after trying to sync the watch as I always do. If I plug into the USB 3.0 port it totally changes the date and time by 3 days and 4 hours. USB 2.0 Ports do not cause the issue. I turned on the GPS and went for a short run. The date is changed connected the date to Tuesday March 3rd and the time which I had set is now 14 hours off. Today is the 2nd at 8:28 PM. Finally, I turned the bluetooth back on and connected to the Connect IQ app and it downloaded something and is now the correct date of March 2nd. This is the 2nd time it's happened. Any ideas why the GPS did not set the correct time? The watch knows where I am since the running event named the town I'm in. Garmin needs to update their software on these watches to set the date along with the time.