August 2nd is the feast of Portiuncula.

A plenary indulgence is available to anyone who will

1. Receive sacramental confession (8 days before of after)

2. Receive the Holy Eucharist at Holy Mass on August 2nd

3. Enter a parish church and, with a contrite heart, pray the Our Father, Apostles Creed, and a pray of his/her own choosing for the intentions of the Pope.

Remission of the punishment for all sins committed from the day of baptism to the reception of the indulgence is available.

"The Portiuncula indulgence is the first plenary indulgence that was ever granted in the Church. There were indeed indulgences at all times, but they were only partial, and only a partial remission of the temporal punishments could be obtained by them. But, as already remarked, he who gains the Portiuncula indulgence is freed from all temporal punishments and becomes as pure as after holy baptism. This was also the reason why Pope Honorius was astonished when St. Francis petitioned for the confirmation of this indulgence, for such an indulgence, up to that time, had been entirely unknown. It was only after he had come to the conviction that Jesus Christ himself wished it, that he granted the petition of the saint and confirmed the indulgence"
From http://friarsminor.org/sermons/portiuncula.html