As you know, since October 18, 2013, changed the laws of arrival for people who do not enter the EU.
Calculate dates allowed for visas in EU countries by visiting: http://ru.visacalc.com/
The rest do not follow the same laws, the right to be 90 days of the 180 days, the law has changed the calculation. Until October last year, the calculation of the days were ahead, lie now numbered backward, after each output.
Example: You have decided to come on May 1 and has decided to stay in Spain or in another EU country till May 10, then subtract the 190 days from May 10, those are the days that you will have passed. in the EU