Kyoto's mountain cherries reached full bloom on March 30, 0955 — day 89 of the year. The earliest on record at the time — before it, 812's April 1. Of the 838 years on record, the 11th earliest. From 812 to 1850 the average was April 15 (day 105.2). Before modern weather records, the date comes from diaries and chronicles of flower-viewing parties at the imperial court, temples and shrines, gathered by Yasuyuki Aono. Data: Aono and Kazui (2008), Aono and Saito (2010), Katata (2026), via Our World in Data (CC BY 4.0). https://ourworldindata.org/grapher/date-of-the-peak-cherry-tree-blossom-in-kyoto