“The Cycle of Prayer seeks to preserve the integrity of the Sunday liturgy, without losing sight of the importance of being united with the universal or local Church in praying and working for important intentions. It seeks to do this be encouraging the faithful to pray for the intentions set out in the Cycle in their personal prayers throughout the period specified, and not only at Mass on a particular day.
The Cycle of Prayer is based on a division of the year into six periods, three of these being the principal liturgical seasons of Advent/Christmas; Lent and Easter and the other three periods being divisions of Ordinary Time, namely Winter, Summer and Autumn.
Each of these six periods is allocated its proper series of intentions for prayer, which may be taken up by both individuals and parishes and other groups throughout the season.”
More information and resources can be found on the Liturgy Office website