Septuagesima
The Third Sunday of Lent is not a special feast and would simply be called in Latin "Dominica III Quadragesimae."
Palm Sunday.
Yes, Lent ends on Holy Thursday and the Easter Triduum begins.
Advent begins on the 4th Sunday before Christmas. Lent is the 40 days before Easter.
Lent last for 40 days before Easter
No. Lent is over at Easter. It is a forty day season from Ash Wednesday to Easter Sunday.
The Froth Sunday of Lent
The time before lent is simply back to the ordinary time especially the first Sunday of ordinary time.
Is Mothering Sunday what you are looking for?
it is mothering Sunday on the 3rd April however because it is mothering Sunday it changes every year!
Prior to Vatican II the fifth Sunday of Lent was known as Passion Sunday. However, in 1969 Pope Paul VI combined Passion Sunday with the 6th Sunday of Lent - Palm Sunday.
The name of the holiday in England that is equivalent to Mother's Day is Mothering Sunday. Mother Sunday is celebrated on the fourth Sunday in Lent.