[FRIENDさん]

Is the kanji pronounced Nihon or Nippon? What is the difference between the two pronunciations? Thank you.

[nolaさん]

Both. Wikipedia and Japan Today have some interesting information on the history of the two pronunciations: https://en.wikipedia.org/wiki/Names_of_Japan and https://japantoday.com/category/features/nippon-or-nihon-no-consensus-on-japanese-pronunciation-of-japan

[shinnosukeさん]

Both. Wikipedia and Japan Today have some interesting information on the history of the two pronunciations: https://en.wikipedia.org/wiki/Names_of_Japan and https://japantoday.com/category/features/nippon-or-nihon-no-consensus-on-japanese-pronunciation-of-japan

Thanks for the link to the article on the Japan Today site. The comments are very enlightening.