If they say congestion at junction 1 then it would be the 3 o clock direction or eastward. I added major motorways this time and Heathrow airport in the west. I think it looks a bit clearer than the last one. There is usually more than one junction affected by congestion on the M25 but with the clock map you can see where it is clearly.
This is how my mind works, always trying to bring clarity and order to a confusing world. Trying to see the world in a simplified straightforward perspective.