Christians can fast and pray whenever God put it in their heart to do.
The last day before Lent is called Mardi Gras (French, Fat Tuesday) or Carnaval (Italian, farewell to meat). Since Lent is a time of fasting and abstaining, a time of penance in preparation for the celebration of Easter, the preceding day is a last fling, a party. It is unfortunate that it has become a matter of revelry and excess.
The day before Easter is called Holy Saturday.
Fasting and making pilgrimages to the holy shrines are called acts of devotion or acts of worship. They are typically undertaken as a way to show reverence and dedication to one's faith or spiritual beliefs.
The name of the Saturday before Easter is called Holy Saturday.
The Sunday before Easter is called Palm Sunday or Passion Sunday.
The day before Easter is simply Easter Saturday. The day before that is Good Friday.
Lent
The Friday before Easter is called "Good Friday" and commemorates the death of Jesus Christ. Other days of the week before Easter are called "Holy (whatever)", with the exception of Thursday, which is called either Holy Thursday or Maundy Thursday depending on local custom. The Sunday before Easter is Palm Sunday.
Lent begins in the Catholic Church forty days before Easter always on a Wednesday, which is called "Ash Wednesday".Lent begins in the Catholic Church forty days before Easter always on a Wednesday, which is called "Ash Wednesday".Lent begins in the Catholic Church forty days before Easter always on a Wednesday, which is called "Ash Wednesday".Lent begins in the Catholic Church forty days before Easter always on a Wednesday, which is called "Ash Wednesday".Lent begins in the Catholic Church forty days before Easter always on a Wednesday, which is called "Ash Wednesday".Lent begins in the Catholic Church forty days before Easter always on a Wednesday, which is called "Ash Wednesday".Lent begins in the Catholic Church forty days before Easter always on a Wednesday, which is called "Ash Wednesday".Lent begins in the Catholic Church forty days before Easter always on a Wednesday, which is called "Ash Wednesday".Lent begins in the Catholic Church forty days before Easter always on a Wednesday, which is called "Ash Wednesday".
Lent
The week before Easter, also known as Holy Week, is called "Passion Week."
Did you mean upavasam? Upavasam is a penance performed by fasting. There are different forms of upavasam. Fasting without food and water throughout the day is called Sudhopavasam. Taking food only once is known as Orikkal.