To help compare orders of magnitude of different times this page lists times between 10¹⁷ seconds and 10¹⁸ seconds (3.2 and 32 billion years) See also times of other orders of magnitude.

• Shorter times
• 3.9 to 4.1 billion years — age of oldest cellular life (cyanobacteria)
• 3.7 to 3.9 billion (3.7e9 to 3.9e9) years — age of the Mare Imbrium, the Lower Imbrian epoch
• 4.468 billion years — half-life of uranium-238
• 4.5 billion years — age of the Earth (see: Precambrian)
• 10 billion years — expected main sequence lifetime of a G2 dwarf star (like the Sun)
• 13.7 ± 0.2 billion years (4e17 seconds) — estimated age of the universe according to the Big Bang theory
• 20 billion years — time until the end of the universe in the Big Rip scenario
• Longer times

fr:1 E17 s ja:1 E17 s ko:1 E17 s