What does “Every hour on the hour” mean?

Every hour on the hour

Meaning: At the start of every hour (1:00, 2:00, 3:00, etc.).

Cada hora en punto

Significado: Al inicio de cada hora (1:00, 2:00, 3:00, etc.).

De hora em hora, na hora certa

Significado: No início de cada hora (1:00, 2:00, 3:00, etc.).

Toutes les heures pile

Signification: Au début de chaque heure (1h00, 2h00, 3h00, etc.).

Jede Stunde zur vollen Stunde

Bedeutung: Zu Beginn jeder Stunde (1:00, 2:00, 3:00 usw.).

Ogni ora in punto

Significato: All'inizio di ogni ora (1:00, 2:00, 3:00, ecc.).

Her saat başı

Anlam: Her saatin başında (1:00, 2:00, 3:00 vb.).

每小时整点

意思: 在每小时的开始时刻（1:00, 2:00, 3:00 等）。

毎時正時に

意味: 毎時間の開始時（1:00, 2:00, 3:00 など）。

매시간 정각에

의미: 매 시간의 시작 시점 (1:00, 2:00, 3:00 등).

Dialogue

09:10:05 - How often does the shuttle bus leave from the terminal?

09:10:09 - It leaves every hour on the hour.

09:10:14 - So, if I miss the 9:00 one, I have to wait until 10:00?

09:10:18 - Exactly. So you'd better hurry if you want to catch the next one.