Date of deposit of ratification (R), acceptance (Ac), accession (A) or of the
notification of succession (S)1
Notes
**
The symbol ** designates those States for whom, in accordance with Article 33, the Convention has not yet entered into force.
This Convention entered into force on 17 December 1975. It subsequently entered into force for each State three months after the date of deposit of that State's instrument, except in cases of declarations of succession (indicated by the letter (S)), where the entry into force occurred on the date on which the State assumed responsibility for conducting its international relations.
The unification of the Yemen Arab Republic and the People's Democratic Republic of Yemen into a single Sovereign State, the Republic of Yemen, was proclaimed on 22 May 1990.