In time for…
Think about this: the first stage of a human being's life is being an infant. Then one grows into childhood, teenage, adulthood and finally becomes a senior citizen. Similarly, the Earth also goes through various phases, each of which lasts for a specific period of time. Where human growth stages last for a few years each, the Earth's are counted in millions of years. This video tells you all about geologic time scales.
Video Courtesy Canva