For the New Year
From the Enchiridion of Indulgences
The Te Deum. PLENARY INDULGENCE when recited publicly on the last day of the year. Otherwise a partial indulgence is granted to those who recite the Te Deum in thanksgiving.
"Come, Holy Spirit, Creator Blest." PLENARY INDULGENCE if recited on the first of January or on the feast of the Pentecost. Otherwise, a partial indulgence is granted to those who recite it.