"Holy Doors throughout the Diocese were opened Dec. 13, 2015 and will remain open through Nov. 20, 2016.

All Catholics of the Diocese of Trenton who visit one of these churches and its Holy Door of Mercy on pilgrimage and who fulfill the conditions ordinarily attached to an indulgence (remission of temporal punishment for sins already forgiven, see canon 992) shall, with the proper intention and disposition, receive the plenary Jubilee Indulgence available during the Extraordinary Jubilee of Mercy. Those conditions are:

1.  recipient must be a baptized Catholic in the state of grace (free from mortal sin) at time of indulgenced work (pilgrimage);

2.  recipient must internally express a detachment from and rejection of sin at time of indulgenced work (pilgrimage);

3.  recipient must make a sacramental confession within 20 days of indulgenced work (pilgrimage), preferably but not required on the day itself;

4.  recipient must receive Holy Communion within 20 days of indulgenced work (pilgrimage), preferably but not required on the day itself;

5.  recipient must pray for the intention of the Holy Father at the time of the indulgenced work (pilgrimage), usually the “Profession of Faith (from Mass),” one “Our Father,” one “Hail Mary” and one “Glory be to the Father” or other suitable prayers.

The Jubilee Plenary Indulgence may be obtained for the living or the dead and will be available only one time daily.  Parish pilgrimages to churches with the Holy Door of Mercy can be arranged in consultation with the pastors of the parishes concerned."

The information above is from the Diocese of Trenton website. Further information can be found at http://www.dioceseoftrenton.org/in-response-to-popes-call-bishop-designates-pilgrimage-churches/.