Well, at least not in the Archdiocese of New York.  In our Liturgical Calendar today is the Obligatory Memorial of Saints Cyril monk, and Methodius, bishop.  We priests use a book called the ORDO:Order of Prayer in the Liturgy of the Hours and Celebration of the Eucharist.  Every diocese has it's own Ordo and it's own Liturgical Calendar.  If you want to see the New York version ask your local priest or if you want to buy your own it is on Amazon at: http://www.amazon.com/ORDO-Prayer-Liturgy-Celebration-Eucharist/dp/B00IBHOGKY

However, on the secular calendar to day is Valentine's day.  So Happy Valentine's day or as is traditionally held in many Latin American countries, Happy Friendship Day!  So who exactly was Saint Valentine?  He was a priest of the First Century who suffered Martyrdom on February 14, 270.  If you want to know about him see: http://www.catholic.org/saints/saint.php?saint_id=159