There are hundreds of saints with feast days in February but the best known was probably St. Valentine of Rome who has his feast on February 14.
There are a number of saints with February 14 as a feast day. However, the best known of these is probably Saint Valentine of Rome.
The feast day of St. Cyril, brother of St. Methodius, is February 14. He shares the date with St. Valentine and several other saints.
Before being removed from the Calendar of Saints, the feast day of Saint Valentine of Rome was on February 14.
Saint Valentine of Rome originally had his feast day on February 14. However, in 1969 he was removed from the Calendar of Saints so no longer has a feast day in the Catholic Church. However, that continues to be his feast day in some Orthodox and Protestant denominations.
The first of November is All Saints Day in which the church celebrates all the saints who have not been canonized but are in heaven. The second day of November is All Souls Day on which we pray for all departed souls in purgatory.
All saints have a feast day and the feast day of Saint Valentine is, or was, on February 14. Since 1969 he has been removed from the Calendar of Saints but many people still celebrate the day.
All saints and blesseds are assigned a feast day by the Vatican's Sacred Congregation for the Causes of Saints.
The feast day of Saint Apollonia of Alexandria is on February 9.
The feast of Saints Peter and Paul - June 29.
Before he was removed from the Calendar of Saints in 1969 the feast day of St. Valentine was on February 14. The day was named after him, not the reverse.
The feast of All Saints is celebrated on November 1st. It is a day for Christians to honor and remember all the saints in heaven, both known and unknown.
Whenever saint is recognized by the Church they are assigned a feast day. Valentine was given February 14 until he was removed from the Calendar of Saints in 1969.