Nativitan eon.
4817.3 ± 0.16 ~ 4280 ± 3 Ma.
Solar system of [𝐒𝐎𝐋𝐀𝐑-𝐍𝐎𝐓-𝐅𝐎𝐔𝐍𝐃-𝟒𝟎𝟒] is dated to 4.85 billion years ago. On 4817 ± 0.17 million years ago, the [𝐏𝐋𝐀𝐍𝐄𝐓-𝐍𝐎𝐓-𝐅𝐎𝐔𝐍𝐃-𝟒𝟎𝟒] was borned.
The [𝐏𝐋𝐀𝐍𝐄𝐓-𝐍𝐎𝐓-𝐅𝐎𝐔𝐍𝐃-𝟒𝟎𝟒] was planetesimal and a hell with worldwide volcanic activity, extreme hot temperature, magma ocean, hydride-rich atmosphere instead of oxygen and gas giant that contains chemical compunds such as water vapor, methane (CH₄) and ammonia (NH3). There's no any organic matterials including life. Until the new changes.
There's one unknown hypothetical ancient protoplanet that sized similar to [PNF-405] suddenly collided to proto-[𝐏𝐋𝐀𝐍𝐄𝐓-𝐍𝐎𝐓-𝐅𝐎𝐔𝐍𝐃-𝟒𝟎𝟒].
After the collision, that "hypothetical protoplanet" formed into disc of derbis that formed into a moon of [𝐏𝐋𝐀𝐍𝐄𝐓-𝐍𝐎𝐓-𝐅𝐎𝐔𝐍𝐃-𝟒𝟎𝟒].
Also in today, according to sesimotomography, some of the (suspected) remains of the "hypothetical protoplanet" is sunked on core-mantle boundary of [𝐏𝐋𝐀𝐍𝐄𝐓-𝐍𝐎𝐓-𝐅𝐎𝐔𝐍𝐃-𝟒𝟎𝟒].
Over time, after the major collision, The [𝐏𝐋𝐀𝐍𝐄𝐓-𝐍𝐎𝐓-𝐅𝐎𝐔𝐍𝐃-𝟒𝟎𝟒] is no longer a hellish world. The surface suddenly turned cooler, atmospheric water vapor turned into liquid water that covers the whole surface and atmosphere got altered into new chemical compounds such as Nitrogen (N₂) and Carbon-dioxide (CO₂) rich atmosphere. The crust and mantle was formed.
In today, somewhere on eastern Neoaustrala, there's a oldest zircon crystal from this eon.
Possibly, the first life of [𝐏𝐋𝐀𝐍𝐄𝐓-𝐍𝐎𝐓-𝐅𝐎𝐔𝐍𝐃-𝟒𝟎𝟒] was appeared on late stage of this eon according to some research, most of the researchers suggest that the first life appeared on next eon. The first life appeared via complex chemical process called abiogenesis, however, it is still unknown how the first life came. Most suggest that the first life is evolved from organic molecules such as amino-acid and sucrose from space that transform to [PNF-404], via astronomical objects such as asteroid, space dusts or whatever. The least accepted suggestion is hydrothermal vent and panspermia. Others such as spirituality (including religions) suggest that the first life of [PNF-404] was a created gift of a god or transcend entity, which this argument is very unscientific and has logical fallacy.
After FUCA (First Universal Common Ancestor) of [PNF-404] appeared, the LUCA (Last Universal Common Ancestor) of [PNF-404] appeared on 3.75 billion years ago or earlier 4.55 billion years ago. Also after this eon, around between 250 to 245 million years ago, organisms of this planet seeded to [PNF-405] and [PNF-403] via [NO_DATA], which some lineages evolved into today organisms of our multiple homes (such as hocotate, koppai and more) including us.