Last night I was aimlessly looking at the FlightRadar app and watched a southwest flight trying to land at Oakland, and do 2 go-arounds. I noticed the ground speed as they were supposed to be landing was up around 150 knots, and when I checked the weather obs, sure enough they were landing with a tailwind. Finally, they did a big loop and came in from the opposite direction and landed safely with a speed around 115 knots. So my question is, were the go-arounds part of the planned process of changing the air traffic pattern due to wind direction change, or did the pilot abort the landings and tell ATC they have too strong a tailwind to land in?