In Ordinary Time each booklet covers about 2 months of Sundays. Ordinary Time III covers the Sundays of August & September. For a table showing the relationship between the date  and the Sunday of the Year see the Liturgy Office website.

Sundays in Ordinary Time have 2 Communion Antiphons. If there is a correspondence between the Antiphon and the Gospel of the day that one should be chosen. In Ordinary Time the texts of the Sunday are used on  the following weekdays.

The booklet for Ordinary Time III contains settings for the following days:

Ordinary Time III (Sundays 18 – 26)

Eighteenth Sunday in Ordinary Time

EA O God, come to my assistance (69)
CA I You have given us, O Lord (Wis 16)
CA II I am the bread of life (35)

Nineteenth Sunday in Ordinary Time

EA Look to your covenant (73)
CA I O Jerusalem (147)
CA II The bread that I will give (110)

Twentieth Sunday in Ordinary Time

EA Turn your eyes, O God (83)
CA I With the Lord (129)
CA II I am the living bread (118)

Twenty-First Sunday in Ordinary Time

EA Turn your ears, O Lord (85)
CA I The earth is replete (103)
CA II Whoever eats my flesh (103)

Twenty-Second Sunday in Ordinary Time

EA Have mercy on me, O Lord (50)
CA I How great is your goodness (30)
CA II Blessed are the peacemakers (Is 66)

Twenty-Third Sunday in Ordinary Time

EA You are just, O Lord (118)
CA I Like the dear that yearns (41)
CA II I am the light of the world (26)18

Twenty-Fourth Sunday in Ordinary Time

EA Give peace, O Lord (Ecc 36)
CA I How precious is your mercy (35)
CA II The chalice of blessing (115)

Twenty-Fifth Sunday in Ordinary Time

EA I am the salvation of the people (77)
CA I You have laid down (18)
CA II I am the good shepherd (22)

Twenty-Sixth Sunday in Ordinary Time

EA All that you have die (129)
CA I Remember your words (118)
CA II By this we came to know (1 Peter)