The Angelus is recited at three particular times during the day; 6 am, 12 noon, and 6 pm. During the Easter Season, the Angelus is replaced by the Regina Caeli. A partial indulgence (applicable to the souls in Purgatory) is granted to those who devoutly recite it according to the time of the year.
The Angel of the Lord
a) During the year (outside of Easter Season)
V. The Angel of the Lord declared unto Mary, R. And she conceived of the Holy Spirit. Hail Mary.
V. Behold the handmaid of the Lord, R. Be it done unto me according to your word. Hail Mary.
V. And the Word was made flesh, R. And dwelt among us. Hail Mary.
V. Pray for us, O holy Mother of God, R. That we may be made worthy of the promises of Christ.
Let us pray. Pour forth, we beg you, O Lord, your grace into our hearts: that we, to whom the Incarnation of Christ your Son was made known by the message of an Angel, may by his Passion and Cross be brought to the glory of his Resurrection. Through the same Christ our Lord. Amen.
b) During Easter Season
V. Queen of Heaven, rejoice, alleluia: R. For he whom you merited to bear, alleluia,
V. Has risen, as he said, alleluia. R. Pray for us to God, alleluia.
V. Rejoice and be glad, O Virgin Mary, alleluia. R. Because the Lord is truly risen, alleluia.
Let us pray. O God, who by the Resurrection of your Son, our Lord Jesus Christ, granted joy to the whole world: grant, we beg you, that through the intercession of the Virgin Mary, his Mother, we may lay hold of the joys of eternal life. Through the same Christ our Lord. Amen.