on the half hour
- Happening hourly, but at 30 minutes past each hour; ie, 08:30, 09:30 etc.
- Trains leave here for New York every hour on the half hour.
- Happening on the hour and at 30 minutes after the hour.
- 2010, Stephanie Cowell, Claude & Camille, page 248:
- He bought and framed Japanese prints, and she chose a bronze mantelpiece clock with a silver bell that struck on the half hour.
- (soccer) At thirty minutes into a half.