Please take a look at Iida-san's blog. http://minami-kajuen.dreamlog.jp/archives/51312200.html
This is called a Diamond Fuji. He wrote that he took the photos yesterday. The sunset began at 16:37 and took only two minutes. Isn't that a gorgeous sunset? He has been trying to capture a Diamond Fuji, but he wrote he was only successful once in February. So, this is the second time this year. He lives in Meguro, Tokyo, not close to Mt. Fuji. He is my Kana Shodo teacher's husband.