half-hourly

half-hour (hfour, häf-)

n.

1. A period of 30 minutes.

2. The middle point of an hour: The clock chimes on the half-hour.

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half-hourly adv. & adj.

Thesaurus

Adj.	1.	half-hourly - occurring ever half hour periodic, periodical - happening or recurring at regular intervals; "the periodic appearance of the seventeen-year locust"
Adv.	1.	half-hourly - every thirty minutes, every half hour

Translations

half-hourly [ˌhɑːfˈaʊəlɪ]

A. ADV → cada media hora

B. ADJ at half-hourly intervals → cada media hora

half-hourly [ˌhɑːfˈaʊəlɪ] adj & adv → ogni mezz'ora

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half-hourly [ˌhɑːfˈaʊəlɪ] adj & adv → ogni mezz'ora