half-hourly in Russian
half-hourly in Russian
получасово́й
Once every half-hour, every 30 minutes.
[[каждый|ка́ждые]] [[полчаса́]]
At intervals of a half-hour, every 30 minutes.
два [[раз|ра́за]] в [[ча́с]]
At intervals of a half-hour, every 30 minutes.