|
|
| YEAR | DATE | EVENT | PRIME MINISTER |
| 1975 | 1 september | Republic of the North Solomons | Alexis Sarei |
| 1976 | 9 august | Reincorpoarted into Papua New Guinea | |
| 1990 | may | Repubblic | Joseph Kabui |
| 1995 | april | Republic of Mekamui | Theodore Miriung |
| 1996 | 18 november | Gerard Sinato | |
| 1999 | 15 january | Self governing provence of Papua New-Guinea | Gerard Sinato + Joseph Kabui |
| 1999 | 9 december | governor John Momis | |
| 2005 | 20 april | governor Gerard Sinato | |
| 2005 | 15 june | Joseph Kabui | |
| 2008 | 7 june | John Tabinaman | |
| 2020 | 25 september | Ishmael Toroama |