12 days
Eight.
9 days
The number of feast days in a calendar year depends on the religious tradition or cultural practices being followed. For example, in Catholicism, there are many feast days, including those dedicated to saints, liturgical celebrations, and holy days of obligation. In other religious traditions or cultures, the number of feast days may vary.
one; christmas day
Mary has many, many feast days, too many to list here. Click on the link below for a comprehensive list.
3
The most important feast days are called Holy Days of Obligation.
Many hundreds. Practically every day of the year is a Feast day except when the day happens to be declared a solemnity such as Good Friday. On those such days, the Feast Day is usually differed. Why so many? Saints all have feast days associated with them. Not every Catholic celebrates every Saint's feast day, it is up to the discretion of the Catholic.
Mary has a number of feast days thoughout the year, too many to list here. Click on the link below for a complete list.
For a complete list of the feast days of saints click here.
Everyday of the year is a feast day for many saints. However, the saint's feast is not memorialized if it falls on a Sunday or on other important liturgical days such as Good Friday.