Duration of the Supplementary Agreement. 1. This Supplementary Agreement shall be concluded for an indefinite period of time. Either Contracting State may terminate it through diplomatic channels at the end of the calendar year giving three months' written notice. The relevant date for calculating the period of notice shall be the day on which the notice is received by the other Contracting State.
Duration of the Supplementary Agreement. This Supplementary Agreement will take effect from the time of its signing, and its period of validity is in consistent with the Agreement.