I looked on https://maps.google.com/locationhistory https://maps.google.com/locationhistory at what google think my location is. Usually it's pretty accurate.

I looked on https://maps.google.com/locationhistory https://maps.google.com/locationhistory at what google think my location is. Usually it's pretty accurate. But several times a year there are major anomalies For example showing me traveling the 4 miles to work in London via a quick journey to Oslo. It's pretty reliable but not 100%