there aren't really any specific situations? just when you're in need of help from God or need Mary's help to pray to God for something such as:
You can use a Hail Mary (not merry) as a separate prayer or add it to the end of a series of prayers. To do this, simply say the Hail Mary prayer at the end of the prayers before bed or in the morning.
There's prayers but there are no books that mentions hail Tau.
The favorite prayer of Christians include the Our Father and the Hail Mary.
the prayer 'Hail Mary' is 'je vous salue Marie' in French.
The "Hail Mary" prayer in Latin is translated as "Ave Maria."
Familiar to Catholics from its use in the "Hail Mary" the word "hail" is from the verb "to hail" which means to greet or call upon or signal to someone. In the prayer the "Hail Mary" it is being used as a form of formal and polite salutation.
The Hail Mary
The prayer in honor of the Annunciation is the Hail Mary, which begins with the words "Hail Mary, full of grace, the Lord is with thee.” This prayer celebrates the moment when the angel Gabriel announced to Mary that she was chosen to be the mother of Jesus.
A prayer that honours the Mother Of God as the Queen of Heaven.
the prayer containing 3 hail marys to honor the incarnation
All hail, King Jesus, All hail, Emmanuel: King of kings, Lord of lords, Bright Morning Star. And throughout eternity I'm going to praise Him, And forevermore I will reign with Him.
The Hail Mary is one such prayer, because it recalls St. Gabriel telling Our Lady that she was going to become the Mother Of God.