1 E16 s

To help compare orders of magnitude of different times this page lists times between 10¹⁶ seconds (320 million years) and 10¹⁷ seconds (3200 million years). "See also" times of other orders of magnitude.

* Shorter times
* 340 million years—time since the beginning of the Carboniferous and the end of Devonian period
* 400 million years—time since the beginning of the Devonian and the end of the Silurian period
* 420 million years—time since the first creature took a breath of air
* 435 million years—time since the beginning of the Silurian and the end of the Ordovician period
* 500 million years—time since the beginning of the Ordovician and the end of the Cambrian period
* 540 million years—time since the beginning of the Cambrian and the end of the Precambrian period. Time since the Cambrian explosion and age of the earliest Vertebrates.
* 575 million years— age of the oldest Animal fossils
* 580 million years—time since the end of a possible Snowball Earth ice age
* 600 million years—age of first complex multicelled lifeforms
* 703.8 million years—half-life of uranium-235
* 750 million years—time since the beginning of a possible Snowball Earth ice age
* 1277 million years—half-life of potassium-40
* 1.8-2.1 billion years—age of the earliest Eukaryotes
* 2.3 billion years—time since the first known ice age
* 3.0 billion years—time until the potential Andromeda-Milky Way collision, between the Milky Way and Andromeda galaxies
* Longer times