Shavuot is the day on which we mark the Revelation on Mount Sinai and the giving of the Torah to the people of Israel.
For the first and only time in the history of mankind, the Creator of the world appeared, in order to hand down the Torah in the presence of six hundred thousand men, as well as women, children and the mixed multitude. This momentous event took place on 6th Sivan, the day we celebrate Shavuot.