Today, the last day of the year, you have an opportunity to obtain a plenary indulgence, under the usual conditions, by taking part in the recitation or singing of the Te Deum in a church or oratory.
Tomorrow, 1 January, you can obtain a plenary indulgence by taking part in the singing or recitation of the Veni Creator Spiritus.
I recommend warmly that you review and excellent post by my friend Fr. Tim Finigan, the parish priest in marvelous Margate, about obtaining indulgences. HERE
Tomorrow, we will sing the Veni Creator immediately after 9 a.m. Mass.
If there were ever a year in which we needed the help of the Holy Spirit, I sense that this upcoming year is it.