If Earth's history were a 24-hour clock, when did modern humans appear?

A medium science trivia prompt from the quest1on archive. Try it first, then compare your answer with the explanation and related questions below.

Explanation

Modern Homo sapiens have existed for about 300,000 years. On a 24-hour scale of Earth's 4.5 billion year history, we appear just 5 seconds before midnight.

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Modern Homo sapiens have existed for about 300,000 years. On a 24-hour scale of Earth's 4.5 billion year history, we appear just 5 seconds before midnight.

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