Feast Of The Purification Of The Blessed Virgin Mary - 2 February (also called Feast Of The Presentation Of The Lord Jesus Christ)

Quoted from Simply Catholic [1]:

As early as the fourth century Christians commemorated the presentation of Jesus in the Temple, but, at the time, there was no feast name attached. In seventh-century Rome, the Church named the celebration the feast of the Purification of the Blessed Mother Mary, and it remained that way for nearly 1,300 years. In the reforms after Vatican II, the feast was given a stronger focus on Jesus (by stressing the Presentation of Jesus), but clearly the events of purification and presentation that took place when Jesus was 40 days old (see Lk 2:22-39) are tied together and thus commemorated together.

Quoted from Catholicism.org [2]:

The Presentation of the Child Jesus in the Temple.  Forty days after the birth of Jesus, His virginal Mother went to the Temple to fulfill the rite of purification, for which she had no need, but to which, in her humility, she submitted because it was one of the requirements of the Jews.  This was the first day Jesus ever entered a church.  He was carried there by His Blessed Mother and Saint Joseph, and presented to His Eternal Father in the Temple.  Most of the Jews, men and women, in the Temple in those days were wicked and faithless people.  There was one old man named Simeon [3] whose faith and belief in the coming of the Messias was still true.  He took the Child Jesus in his arms and uttered the beautiful canticle: “Now Thou dost dismiss Thy  servant, O Lord, according to Thy word in peace, because my eyes have seen Thy salvation which Thou has prepared before the face of all peoples; a light to the revelation of the Gentiles and the glory of Thy people, Israel.”

[1] https://www.simplycatholic.com/the-feast-of-the-presentation/

[2] https://catholicism.org/the-purification-of-the-blessed-virgin-mary-1-ad.html, italics  original.

[3] Note:  Simeon mentioned here is from Luke 2:29-32, and is most likely different from Saint Simeon described by uCatholic at https://ucatholic.com/saints/simeon/, whose day of commemoration is on 18 February, see https://www.catholicculture.org/culture/liturgicalyear/calendar/day.cfm?date=2022-02-18