In the Bible, there is no fixed calendar date for celebrating Shavuot. Shavuot is defined as the day of celebration after the completion of the Omer Count: Seven weeks between Passover and Shavuot. During the seven weeks we prepare ourselves for the giving of the Torah.
Shavuot is a celebration of our acceptance of the Torah at Mount Sinai over 3,300 years ago. The word Shavuot means "weeks", It took the people of Israel seven weeks to reach Mount Sinai when they departed Egypt, they departed Egypt on the 15th of Nissan the first day of Passover.
Decorating the Home with Greenery & Flowers
It is customary to eat dairy foods on the first day of Shavuot
In many synagogues the Book of Ruth is read on the second day of Shavuot