| November 2019 | ||
| 22/11/19 | The alliance OS (today: OSS) was founded. | |
Founding members::  Tr VeSSeLaM and TR SEFA. | ||
 The alliance reaches a population more than 1,000. | ||
| 28/11/19 | Joining of:TR BALYOZ. | |
| December 2019 | ||
| 05/12/19 | Leaving of:Tr VeSSeLaM. | |
| 06/12/19 | The alliance is now known as OSS. | |
| 07/12/19 | Joining of:Tr VeSSeLaM. | |
| 13/12/19 | The alliance reaches a population more than 5,000. | |
| 20/12/19 | Deletion of:Tr VeSSeLaM. | |
| February 2020 | ||
| 13/02/20 | Deletion of:TR SEFA. | |