| Year | Month | Day | Event |
|---|---|---|---|
| 421 | Feb | 08 | Constantius III Becomes Co-Emperor |
| 425 | Oct | 23 | Valentinian III Elevated As Roman Emperor |
| 455 | Mar | 17 | Maximus Becomes Emperor Of Western Roman Empire |
| 474 | Jan | 18 | Leo II Becomes Byzantine Emperor |
| 829 | Oct | 02 | Theophilos Becomes Byzantine Emperor |
| 920 | Dec | 17 | Romanos I And Constantine VII Were Co-emperors |
| 1138 | Nov | 05 | Tong Is Emperor Of Vietnam At 2 |
| 1831 | Apr | 07 | Pedro I Returns As Leader Of Portugal |