満まん開かい日び

noun

first day of full bloom (cherry blossoms)

Specifically refers to the first day when at least 80% of Somei Yoshino cherry blossoms have opened in a given region or location, as used in weather forecasts and sakura reports.

• 気き象しょう庁ちょうは東とう京きょうの満まん開かい日びを3月がつ28日にちと発はっ表ぴょうした。

  The Japan Meteorological Agency announced that the first day of full bloom in Tokyo is March 28th.

• 今年ことしの桜さくらの満まん開かい日びは平へい年ねんより早はやい。

  This year's first day of full bloom for cherry blossoms is earlier than average.