Hi Gofnyssa,
Starting from the symbol just to the left of the top, here’s what it looks like it means, I’m a little confused about the last two though:
Advent
The Alpha and the Omega (the Beginning and the End) a big focus during Advent.
Christmas
Maybe it’s the star of Bethlehem.
Lent
The Crown of Thorns and the Cross.
Easter
The rising sun; symbolizing the Resurrection.
Pentecost
Maybe the key is symbolizing the birthday of the Church.
Possibly Corpus Christ or the Ascension?
It seems like it would be the Ascension but the Ascension happens before Pentecost and Corpus Christi happens after Trinity Sunday so i’m not sure.
Maybe Trinity Sunday.
That is a symbol of the trinity.