On March 20th, the cherry blossoms officially began blooming in Tokyo. For those of us in Hakodate, this news is the ultimate signal to start counting down until Goryokaku Park turns a beautiful shade of pink. Today, I’ll be predicting the 2026 bloom date for Hakodate using two methods: the unique “30-Day Rule” and the … Continue reading [2026 Hakodate Cherry Blossom Forecast] Is the “30-Day Rule” the New Standard? Predicting This Year’s Bloom with Two Key Formulas