Cocos Islands – Flag in Lexicon and Shop https://www.flaggenlexikon.de/fcocos_me.htm
The Cocos Islands are an external possession of Australia in the Indian Ocean. The flag of the Cocos Islands is solid green and shows a yellow disc with a palm tree in the upper corner of the mast, a yellow crescent moon and the southern cross.
The flag is single-coloured green and shows in the upper staff quadrant near the pole