They took the donkey to Jesus and he rode it into the city some put cloaks before the lord and some put palm leaves before him.
lkolk0oljukjuhjilhjiuhuhjlkjlkjilik
You might be mistaken. I have never heard of a 'Psalm Sunday' - but there is a 'Palm Sunday' which is the Sunday before Easter Sunday. It is so called because the Gospel read that day in Christian churches concerns itself with how Jesus rode into Jerusalem and was greeted by people laying palm-leaves in his path.
Psalm 89.1-18
The psalm for the Mass on Corpus Christi (Sunday, 2 June 2013) is Psalm 110, verses 1-4 in the new numbering (it would be psalm 109 in the Vulgate).
On all Sundays and Solemnities (Christmas, All Saints, Immaculate Conception, Assumption, etc.) there are three (well, four if you count the psalm), usually an Old Testament reading, a psalm, a New Testament reading, and the Gospel. Weekday Masses only have one reading, the psalm, and the Gospel, there is no second reading on a non-solemnity.
Psalm 89.1-18
I am not able to provide real-time information on specific dates. However, Sunday School lessons often cover a variety of topics and Scripture passages throughout the year. You can check with your church or the curriculum provider for that specific date's lesson title and Scripture.
The seven penitential psalms are Psalms 6, 32, 38, 51, 102, 130, and 143. These psalms are traditionally associated with repentance and seeking forgiveness from God.
Psalm 100 is known as a Psalm of joy and reverence. It is often called the "Psalm of Thanksgiving" because it focuses on praising God with joy and thankfulness for His steadfast love and faithfulness.
Psalm 9 is a lament Psalm.
The most quated psalm is psalm 23.
Psalm 23 is the most popular Psalm.