Yes. Christians, that include Catholics and other Protestants, believe Sunday is a holy day. In Judiasm, Saturday is the holy day.
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Holy Week starts on Palm Sunday, which is also known as Passion Sunday.
sunday
sunday
It is the first day of the holy week.
It can be called Palm Sunday or Passion Sunday.
No. The week before Easter Sunday (from Palm Sunday to Holy Saturday) is called Holy Week. It is also the last week of the 40 day period of Lent, which begins on Ash Wednesday. Officially, Easter Week is the week that begins on Easter Sunday. There are also 40 days in the period of Easter, beginning on Easter Sunday, which is actually only the First Sunday of Easter.
Purple during holy week, and then white on Resurrection Sunday (Easter Day).
Holy Week is the seven day period before Jesus was resurrected. It begins on Palm Sunday - the day which Jesus rode into Jerusalem.
No, they are different. Shrove Tuesday is the day before Ash Wednesday, and Holy Tuesday is the Tuesday of Holy Week - the week between Palm Sunday and Easter Sunday.
Holy week lasts from Palm Sunday to Easter Sunday
Because Christ rose from the dead on the first day of the week.
Mass is held every day of the week. Sunday is the most important day, which may be what you are asking about.