Jerry called Garvey's office at half-hourly intervals through the day.

Instead, in a decision that will forever haunt the couple, they opted to take turns checking on all the sleeping children at half-hourly intervals.

I have to cover every floor at half-hourly intervals and click a key into time locks.

The crossing takes about 20 minutes and the services operate at half-hourly intervals.

The Bureau of Meteorology operates a weather facility from the island and publishes observations at half-hourly intervals on their website.

Trains run in both directions through this station, departing at half-hourly intervals, supplemented by a 13/13/26 schedule at peak times on week days.

Trains depart from Embsay at half-hourly intervals from 10.30 am until 4.00 pm.

Measurements of the generation over half-hourly intervals are supplied to the Electricity Commission.

Lines S 4 and S 5 operate at half-hourly intervals on one leg each.

It is planned to introduce services operating at half-hourly intervals.