The faithful can earn a plenary indulgence today (Feast of the Sacred Heart) under the usual conditions by reciting publicly the Iesu dulcissime (the Act of Reparation). If not recited publicly, the indulgence is partial.
The conditions for earning a plenary indulgence:
]Going to confession
*]Receiving Holy Communion
*]Being free from all sin, even venial
*]Praying for the intentions of the Holy Father (Our Father, Hail Mary, Glory be)
*]The prescribed prayer (in this case, the *Iesu dulcissime)