‘Farsi’ was the name given to ‘Parsi’ after Persia was invaded by Arabs. Because there is no letter P in Arabic alphabets, therefore they changed ‘Parsi’ to ‘Farsi’. Farsi is the official language of Iran which was known as Persia before 21st of March 1935. The English equivalent of ‘Farsi’ is ‘Persian’. Persian people like to refer to them selves as Persian rather than Iranian because it can be used to relate all the Persian related items like : Persian rug, Persian cat, Persian gulf, Persian literature and etc . These are the collection of the flags that Iran has had so far.
Interesting link http://www.iranchamber.com/geography/articles/flag_anthem.php










) in the northern spring and summer than in the northern autumn and winter.