To wish someone a happy Yom Kippur, you can say:
- "G’mar Chatimah Tovah," which means "May you be sealed in the Book of Life for a good year."
- "Have an easy fast" or "Tzom Kal," which means wishing them a meaningful and manageable fast.
Yom Kippur is a solemn day of atonement and fasting, so greetings are often respectful and reflective rather than celebratory.