council regul ec june amend regul ec convers rate euro currenc member state adopt euro council european union regard treati establish european commun articl thereof regard propos commiss regard opinion european central bank council regul ec decemb convers rate euro currenc member state adopt euro determin convers rate januari pursuant council regul ec introduct euro council decis ec accord articl treati stipul greec fulfil condit adopt singl currenc pursuant council decis ec june accord articl treati adopt greec singl currenc januari greec fulfil condit derog greec abrog effect januari introduct euro greec requir adopt convers rate euro drachma adopt regul articl list convers rate articl regul ec insert rate german mark spanish peseta quot greek drachma quot articl regul enter forc januari regul bind entireti directli applic member state santa maria da feira june council presid pina moura opinion deliv june publish offici journal oj oj oj page offici journal