Sonneberg was formerly part of the German Empire. In the German Empire, the place was called Sonneberg.
The place is now called Slunečná and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Sonneberg | Austro-Hungary | Böhmisch-Leipa | before the Treaty of Saint-Germain |
| Sonneberg | Czechoslovakia | Česká Lípa | after the Treaty of Saint-Germain |
| Sonneberg | German Empire | Böhmisch Leipa | 1938 |
| Slunečná | Czechoslovakia | Nový Bor | 1945 |
| Slunečná | Czechoslovakia | Česká Lípa | 1992 |
| Slunečná | Czech Republic | Česká Lípa | 1993 |