I made a copy of my map and put it in the creative for you to understand better by showing the seed and the coordinates of the portals, the portal that will be at coordinate 21, 78, -33 is the one in my house and it connects with the one in the nether 8, 45, 5. When I go to the portal located at 500, 63, -311 it will take me to the same portal as 8, 45, 5. This happens with any portal that I build regardless of the location
I made a copy of my map and put it in the creative for you to understand better by showing the seed and the coordinates of the portals, the portal that will be at coordinate 21, 78, -33 is the one in my house and it connects with the one in the nether 8, 45, 5. When I go to the portal located at 500, 63, -311 it will take me to the same portal as 8, 45, 5. This happens with any portal that I build regardless of the location