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| YEAR | DATE | EVENT | PRESIDENT |
| 1921 | 22 august | Russian provence | |
| 1936 | 5 december | Sovietic Socialist Republic | |
| 1990 | 29 december | Russian Republic | Yury Alekseyevich Spiridonov |
| 2002 | 15 january | Vladimir Torlopov | |
| 20xx | Vyacheslav Gayzer | ||
| 2015 | 30 september | Sergey Gaplikov | |
| 2020 | 2 april | Vladimir Uyba |