core time
Refers to the fixed hours during a flexible work schedule when all employees are expected to be present. Common in Japanese workplace contexts.
当社のコアタイムは午前10時から午後3時までです。
Our company's core time is from 10 a.m. to 3 p.m.
Variant spelling with a middle dot; less common in everyday writing.
Loanword from English 'core time', adopted into Japanese business terminology.