Johann Andreas Segner (1704-1777) was the first professor for mathematics in Göttingen.
At the end of each semester, the commented university calendar for the following semester is provided here. In addition to the lectures, it contains specifications about place and time of the events as well as the assignment to the modules with links to the corresponding pages of the module descriptions.
You can also find a list with the courses in the university information system: UniVZ and in the internal system StudIP.