Refers to the peak period of a person, organization, industry, or era when it was most successful or influential.
This town reached its golden age during the Edo period.
彼は30代が選手としての最盛期だった。
His prime as an athlete was in his thirties.
peak season; best time
Used for the time when fruit, vegetables, seafood, or other seasonal products are at their best. Also used more broadly for the best period for an activity.
今がサクランボの最盛期です。
Now is the peak season for cherries.
夏は観光の最盛期だ。
Summer is the best time for tourism.
The tourism industry in this region is now at its peak.
Peaches are at their peak right now, sweet and delicious.
That athlete is said to have already passed his prime.