643: Bliain
| Blianta: 640 641 642 - 643 () - 644 645 646 | |
| Deicheanna blianta: 610í 620í 630í - 640í - 650í 660í 670í | |
| Céadta blianta: 6ú céad - 7ú céad - 8ú céad | |
Eachtraí
Breitheanna
Básanna
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