fujisan-no-hi (=the day of Mt.Fuji)

Today is the day of Mt.Fuji! Why? We call number 2 "Ni", "Ji", "Fu(ta)", etc, number 3 "San", "Mi", "Zo", etc. It is the second month of the year, and the 23rd day, today. So, 223 can be read "Fu-ji-san", means ...Mt.Fuji !!!