noun
Standard time expression for 4:00. Used in schedules, appointments, and everyday time-telling.
会議は４時からです。
The meeting is from four o'clock.
今、何時ですか？ — ４時です。
What time is it now? — It's four o'clock.
Means 'four hours' (duration), while ４時 means 'four o'clock' (point in time).
Archaic way to say 'four o'clock' using the old Japanese time system; rarely used in modern Japanese.
Compound of 四 (four) and 時 (hour/o'clock). The reading よ is the native Japanese numeral for four, and じ is the on'yomi of 時 used in time expressions.