Due to the changed lecture periods, the winter semester 2020/21 starts on November 02, 2020 and ends on February 27, 2021.
The summer semester 2021 starts on April 12, 2021 and ends on July 10, 2021.
All deadlines and dates of the academic year 2020/21 can be found here:
www.hu-berlin.de/de/studium/bewerbung/fristen/akademischefristen2021/