depends on the temperature of the water in the hot tub and your state of consciousness. technically, the 90 minutes would relate if the satellite were propelled like the shuttle, for instance, given the speed would be about 17,000 mph and the earth's circumference is about 25,000 miles. but satellites are generally not propelled and are in either a geosynchronous orbit which takes one day for an orbit of earth, or they're in a geostationary orbit appearing to stay in one place, like the comm satellites.