local mean solar time

According to maps.google.com, my longitude is -81.803888 degrees. This puts my house 5.45359253 hours befind Greenwich, England. Call it 5 hours, 27 minutes, and almost 13 seconds. This morning I woke up at 6 AM, Eastern Daylight time, UTC-4; so I got up at 10 AM UTC. This means I got up this morning at 4:32:47 local mean solar time.