Hi Marcela, The Iridium "seam" is between plane 1 and plane 6. The order of satellites in plane 1 is: 74, 72, 73, 70, and 62-68 in that order. The order of satellites in plane 6 is 18, 42, 40, 39, 80, 17, 15, 81, 38, 41 and 43. --Rob