A festival in which the only time the Torah is read during the evening. Everyone, including the children, are 'called up' to the reading of the Torah. Simchat Torah is when the annual cycle of Torah readings is completed and restarted. It symbolizes continuity and unity.
holiday marking the end and beginning of the cycle of reading of the Torah
(Rejoicing of the Law): Joyous festival in which the annual cycle of the reading of the Torah in the synagogue is completed and its first book begun again. The celebration typically includes singing, dancing and marching with Torah scrolls. (Judaism)