Yom Kippur is a solemn and reflective holiday, so it is not customary to greet those observing with "Happy Yom Kippur". Instead, appropriate greetings for Yom Kippur are more about meaningfulness and reflection. Here are some traditional Yom Kippur greetings:

• Gmar chatima tovah: This Hebrew greeting literally means "a good final sealing" and references the traditional belief that a persons fate for the coming year is written on Rosh Hashanah and sealed on Yom Kippur.

• Tzom kal: This Hebrew greeting literally means "easy fast" and is often used in the days preceding the fast or just as its beginning. The English equivalent, "Have an easy fast," is also acceptable.

• Have a meaningful fast: Recognizing that the purpose of Yom Kippur is not that the fast should be easy per se, some have taken instead to wishing people a meaningful fast.

• Wishing you a good seal

• Have a good holy day

• A good final sealing

• Good day

• Have a blessed Yom Kippur

• May your sealing be sweet

• Have a meaningful Yom Kippur

It is also appropriate to wish someone a "good and blessed year" with the Hebrew phrase "ah gut gebentsht yohr".