KnowraLunar distance methodLinked fromLinked fromThe 8 pages that link to Lunar distance method, each with the reason it gives.All 8Related 5Compared with 3Marine chronometerCompared with: It offered a celestial alternative to carrying an accurate timekeeper.John HarrisonCompared with: It was the principal practical alternative to carrying an accurate clock.BackstaffCompared with: It addressed longitude, which a backstaff altitude alone could not determine.