A day and night of Brahmâ, a period of 4,320,000,000 solar-sidereal years. Some say there are an infinity of Kalpas, others limit the number to thirty. A Great Kalpa is a life of Brahmâ; the whole duration of time from the creation to the destruction of the world.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
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