How long is the pass valid?
The German Rail Pass is valid for train travel for 1 month after activation. Within this month you can use your travel days. How many travel days you have depends upon the pass you choose.
On each travel day, you can take as many trains as you wish. You can use your travel days consecutively or non-consecutively, that is completely up to you.
You should start the first journey after 00h00 hours (0:00 a.m.) on the first day of validity. The last journey must be completed at the latest by 24h00 hours (12:00 p.m.) of the last day of validity.