Yes, poche is correct.
Do not be confused with the Immaculate Conception, which
is not an uncommon mistake. I know someone who learned
this error in a so-called Catholic religion class, and remembered
it for 40 years.
The Incarnation occurred at Blessed Mary's "fiat" upon the
Annunciation of St. Gabriel, Archangel, when the Holy Ghost
overshadowed her and she became the Virgin Mother of God
by His power. Feast Day March 25th (just 9 months ahead of
It is in commemoration of this event, the point upon which all
of human history turns, that we genuflect at the Credo, and
at the "Et verbum caro factum est" of the Last Gospel, when it is St.
John cap. i. (The CTLM not infrequently has a substitute Last
Gospel, thus providing all the more Scripture readings
throughout the year.) Traditionally, we also genuflect in the
Angelus when we pray, "And the word was made flesh - and
dwelt amongst us."
Regarding the Immaculate Conception, it was only fitting that
the womb that would bear the Christ Child would be free from
any stain of sin, including original sin, and so, by a singular
privilege and as dogmatically defined in 1864, the Blessed
Virgin Mary was immaculately conceived in the womb of her
mother, St. Anne, a result of natural relations with her husband,
St. Joachim. Feast day, December 8th, just 9 months ahead
of September 8th, the Nativity of Our Lady.
See how the Church does not tarry long on these joyous
occasions, as the Feast days immediately following Christmas
are the martyrdom of St. Stephen, St. John Apostle (who
suffered martyrdom May 6th but survived), the Holy Innocents,
Martyrs, and St. Thomas á Becket, Martyr. And likewise, the
Feast day the day after the octave of the Nativity of Our
Lady is the Feast of Seven Sorrows.
These two birthdays, of Our Lord and Our Lady, are two of
the only 3 birthdays celebrated in the Catholic calendar. The
third one is the Nativity of St. John the Baptist, who was born
without original sin, since he had been sanctified in the womb
of his mother, St. Elizabeth, upon the Visitation of Our Lady
who carried the Christ Child in her womb. The Church
celebrates these 3 birthdays because they were days when
these children were born without original sin.