Thanks, that was interesting. I skipped to the first linked https://en.wikipedia.org/wiki/Molniya_orbit https://en.wikipedia.org/wiki/Molniya_orbit Highlights:

Thanks, that was interesting. I skipped to the first linked https://en.wikipedia.org/wiki/Molniya_orbit https://en.wikipedia.org/wiki/Molniya_orbit Highlights: "[Pic of 12h orbit] Usually the period from perigee +2 hours to perigee +10 hours is used to transmit to the northern hemisphere." "In practice, a satellite in a Molniya orbit serves the same purpose for high latitudes as a geostationary satellite does for equatorial regions, except that multiple satellites are required for continuous coverage."