right for all you disbelievers,proof here..nearest point to rhodos form calis taken of admiralty chart is 44 nautical miles which is 50.67 land miles.
for example mount attayros on rhodos is 1,215 meters high.
taken from the extreme range tables in norries nautical book
at a height of eye of 10 ft above sea level it would be possible to see 1,215meters height from 451 miles away.(if the atmosphere was clear enough of course)
and this is not taking into account refraction.!
am willing to take on a bet that what you see is rhodos, winnings go to local charity..