The Thirteen Tuesdays of St. Anthony

Prayed across thirteen Tuesdays rather than nine days. For what is lost, and for the poor, which were his two great concerns.

Length.
13 days.
Traditionally prayed.
Thirteen consecutive Tuesdays, often ending near 13 June
Sources.
Built from public-domain prayers plus original daily meditations written for this site.

If you miss a day, pick up where you left off. Nine consecutive days is the tradition and it is worth keeping when you can, but a broken chain does not undo what you have prayed, and starting again from day one is your choice rather than a penalty.

About the saint this novena asks