It is just a prayer that honors the Virgin Mary and seeks her intercession. The specific timing of when it can be prayed may range according to individual or Neighborhood tactics. The hymn is sung (using the English translation "Hail, Holy Queen enthroned higher than") by a choir of nuns https://encapsuladosvip.com/vita-pro-nobis-descubra-os-beneficios-dessa-incrivel-planta-medicinal/