Conversation so far:
What is the significance of Jonah in judaism?
The Book of Jonah is read every year, in its original Hebrew and in its entirety, on Yom Kippur - the Day of Atonement.
Why is this important?
as the Haftarah at the afternoon mincha prayer.

Question: How else is Jonah importnat?
Self-contained rewrite: How else is Jonah important other than Yom Kippur?