Many German departure airports allow you to check in your baggage already at the evening before your flight. This service is applicable to all flights departing at the latest at 12 noon the following day.
Please note that you have to arrive at the very latest at the time indicated on your boarding pass, since, otherwise, you lose your right to carriage.
Note: starting on 15 March 2010, a fee in the amount of 3 € per person (12 years old or older) will be charged to check in on the evening before the flight.