This depends on what religion you are. I am a Roman Catholic, therefore I celebrate it on the Thursday before Easter.
Roman Catholics celebrate the Mass of the Last Supper.
The Last Supper is a Christian event and has no meaning for Judaism.
yes
The Eucharist
The Last Supper was celebrated in the Cenacle, or upper room, in Jerusalem.
We celebrate the "The last supper" and when Jesus died
The last supper
Jesus attended only one supper, hence the name "last supper." At the last supper, Jesus instituted the Eucharist and laid the foundation for the Catholic Mass. Many other Christians today celebrate this "last supper" on Sunday mornings at church as a means of symbolic reunion with God.
Jews still celebrate Passover to this day.
to celebrate why Jesus died for us.
It depends upon the denomination you are speaking of. A small group in Christianity celebrate it on the 14th day of the first month (Nisan) after sunset.
the season of lent