| 20 Feb 1925 |
the establishment of the Turkmen Soviet Socialist Republic as a member state of the Union of Soviet Socialist Republics is proclaimed in accordance with a declaration passed by the All-Turkmen Congress of Councils held in Poltoratsk on 20 Feb 1925 |
| 20 Feb 1925 - 27 Oct 1991 |
Türkmenistan Sowet Sosialistik Respublikasy = (to 24 May 1990) Turkmenskaja Sovetskaja Socialističeskaja Respublika (Туркменская Советская Социалистическая Республика) | Turkmen Soviet Socialist Republic |
| 13 May 1925 |
the Turkmen SSR is admitted to the Union of Soviet Socialist Republics in accordance with a resolution passed by the Congress of Councils of the USSR held on 13 May 1925 (USSR Laws and Orders Collection - Part I, No. 35, 6 Jun 1925, p. 538) |
| 24 May 1990 |
Turkmen is recognized as the state language in accordance with a law passed by the Supreme Council (Ýokary Sowety) of the Turkmen SSR on 24 May 1990, effective on the date of passing in accordance with a resolution passed by the Supreme Council on 24 May 1990 (Turkmen Spark, No. 122, 27 May 1990, pp. 1-2; Soviet Turkmenistan, No. 123, 27 May 1990, pp. 1-2) |
| 22 Aug 1990 |
the Turmen SSR is proclaimed a sovereign national state in accordance with a declaration passed by the Supreme Council of the Turkmen SSR on 22 Aug 1990 (Turkmens Spark, No. 193, 23 Aug 1990, p. 1) |
| 27 Oct 1991 |
Turkmenistan is proclaimed an independent democratic state in accordance with a Constitutional law passed by the Supreme Council of Turkmenistan |
