The purpose of the Rosary is to help keep in memory certain principal events or mysteries in the history of our salvation, and to thank and praise God for them. There are twenty mysteries reflected upon in the Rosary, and these are divided into the JOYFUL MYSTERIES, the LUMINOUS MYSTERIES, the SORROWFUL MYSTERIES, and the GLORIOUS MYSTERIES. You may also wish to pray the rosary online, with others or by yourself. As suggested by the Saint Pope John Paul II the Joyful mysteries are said on Monday and Saturday, the Luminous on Thursday, the Sorrowful on Tuesday and Friday, and the Glorious on Wednesday and Sunday (with this exception: Sundays of Christmas season – The Joyful; Sundays of Lent – Sorrowful).
The Divine Mercy Chaplet
The Divine Mercy Chaplet is a relatively recent but very popular devotion revealed by Our Lord to St. Maria Faustina Kowalska, a Polish nun. On Good Friday 1937, Christ appeared to Saint Faustina and asked her to recite this chaplet for nine days, starting on Good Friday and ending on the Octave of Easter (the Sunday after Easter Sunday), now known as Divine Mercy Sunday.
The chaplet is most often recited during those nine days, but it can be prayed at any time of the year, and Saint Maria Faustina recited it almost unceasingly. A standard rosary can be used to recite the chaplet.