To help compare orders of magnitude of different times this page lists times between 320 000 years and 3 200 000 years (10¹³ seconds and 10¹⁴ seconds) See also times of other orders of magnitude.

• Shorter times
• 340,000 years -- half-life of curium-248
• ~600,000 years -- time humans have been able to produce the sounds of spoken languages
• ~700,000 years -- time since last reversal of earth's magnetic field
• 1,000,000 years -- the average lifespan of a blue supergiant star
• 1,500,000 years -- time since beginning of Pleistocene Epoch (beginning of Quaternary Period)
• 1,500,000 years -- time since end of Pliocene Epoch (end of Tertiary Period)
• 1,530,000 years -- half-life of zirconium-93
• 2,600,000 years -- half-life of technetium-97
• Longer times