Yom Kippur

The choice of Sefer Yonah to be read towards the end of the holy day of Yom Kippur is, on the simple level, due to the great success of the teshuva of Ninveh. However, the fact that the entire book is read hints at another idea, which is perhaps actually the main one.

Take part in this big Mitzvah of spreading the light of Hashem

From here he gazes upon all of the needs of the people of Israel.

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The "Ten Days of Repentance," as their name indicates, are days set aside for repenting

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Afflicting the body and soul on Yom Kippur releases one from the shackles of the body and the material, and allows one to connect to the root of his soul.