schengen visa validity period and duration of stay
The duration is counted from the date of the first entry into the Schengen-Area. A Schengen-Visa with the validi ty of one year or more and a registered duration of stay of 90 days permits you, however, to stay in the Schengen-Area for a maximum period of 90 days per half-year (in Germany or other Schengen-Countries).or example: A person has a Schengen-Visa that is valid from 1 January 2013, until 31 December 2013, i.e. for one year. On 18 October 2013, this person (i.e. the visa holder) is in the Schengen-Area.