If you are not switching degree programs in the coming semester, the registration periods are:

Early registration period: Mon, 17 June 2019, 9 am to Thu, 27 June 2019, 1 pm (selected degree programs only)
General registration period: Mon, 2 September 2019, 9 am to Thu 19 September 2019, 1 pm

If you are beginning your studies at Universität Hamburg, starting your first subject semester after switching major or degree subject, or in your first semester of a master’s degree, the registration period for first-semester students applies:
Mon, 07 October 2019, 9 am to Thu, 10 October 2019, 1 pm

If you are already enrolled at Universität Hamburg and are switching to the higher subject semester of another degree program, you can register for your new degree program during the general registration period or the changes and corrections phase, depending on when you transferred to the new degree program. If you still need to take classes from the first subject semester for your new degree program, you can register for these during the general registration period for first semester students.

If you are switching to the higher subject semester of a degree program at Universität Hamburg from another higher education institution, enrollment is often only confirmed at the end of the general registration period. This may mean you can only register for classes in the higher semester during the changes and corrections phase. If you still need to take classes from the first subject semester for your new degree program, you can register for these during the general registration period for first-semester students.