Legendary accession of Emperor Jimmu
Per the chronicles, the start of an unbroken imperial line

According to the Japanese chronicles Kojiki and Nihon Shoki, the legendary first emperor Jimmu ascended the throne at Kashihara. The date is mythical, but Japanese tradition counts its unbroken imperial line from it.
Wikipedia (Russian) · Wikipedia (English) · 7th century BC
Meanwhile around the world (±25 years)
Middle East
- c. 650 BC Library of Ashurbanipal — 10 years later
Alive at the time
- Ashurbanipal (aged 25)