Other countries have already been given an opportunity to receive Shiny Lunala and Shiny Solgaleo in Pokémon (Ultra) Sun or Pokémon (Ultra) Moon, but now it's Greece's time to shine.
Both of the legendary Pokémon will be available from select retailers until November 15th. To receive your corresponding Pokémon (Lunala in Pokémon Sun/Ultra Sun & Solgaleo in Pokémon Moon/Ultra Moon), just ask for a download code at one of these listed retailers:
Seven, Public, Media Markt, Game Explorers, Console Club, Astron DVD Club, Gamescom, Gameland, Power User, Inspot Creta, E-paideia and Met Net.
Thanks to cassiel for the heads up!