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10 seconds (1 gigasecond) equal 11,574 days, 1 hour, 46 minutes and 40 seconds (approximately 31.7 years, or 31 years, 8 months, 8 days).
About 10 minutes ago, the Roman Empire was flourishing and Christianity was emerging. (10 minutes is roughly 1,901 years.)
About 10 hours ago, modern human beings and their ancestors were living in the Stone Age (more precisely, the Middle Paleolithic). (10 hours is roughly 114,080 years.)
About 10 days ago, Australopithecus, an ape-like creature related to an ancestor of modern humans, roamed the African savannas.