Apart from attending Mass, her feast day is probably not celebrated by Catholics in the USA.
The feast of Catherine of Alexandria is on November 25.
Saint Catherine of Alexandria's feast day is on the 25th of November but on the 24th of November for Orthodox churches of a Russian Background.
The name Catherine is celebrated as a Saint Day on the 25th of November by the Catholic Church in honor of St. Catherine of Alexandria
Catherine MacCauley is not yet canonized saint.
The feast day of Catherine of Siena is April 29.
The feast day of Saint Apollonia of Alexandria is on February 9.
There are many, many saints named Catherine or Catharine. However, the feast of St. Catherine of Siena is on April 29.
April 29 is the feast day of Saint Catherine of Siena, a patron saint of Italy.
Catherine is the patron saint of unmarried girls. A custom began where girls would make taffy to attract a beau on Saint Catherine's Day, November 25. Some countries, especially Canada, still observe the practice. For more information, click on this link.
I assume you are referring to St. Catherine of Alexandria. She was one of several saints removed from the Calendar of Saints in 1969 for lack of evidence that she ever existed. However, for some reason Pope John Paul II returned her feast to the Calendar in 2002 as an optional memorial
It is November 25.November 25th
because she is I go to St Catherines of Bologna school her feast day is May 9