If you've read our article about Rosh Hashanah, then you know that it is one of two Jewish "High Holidays." Yom Kippur, the other High Holiday, is often referred to as the Day of Atonement. Most Jews consider this day to be the holiest day of the Jewish year. Often, even the least devout Jews will find themselves observing this particular holiday.

Many Jewish people observe the High Holidays by attending prayer services in synagogues and temples.

In this article, you will learn all about Yom Kippur -- from the days leading up to this High Holiday to why and how it is celebrated. Let's start with a brief discussion of what the High Holidays are all about.