How long was Poseidon in Cronus' stomach?

Poseidon was in Cronus' stomach for an unspecified duration, as the myths do not provide a specific timeline. According to Greek mythology, Cronus swallowed his children to prevent them from overthrowing him. Poseidon, along with his siblings, was later rescued by Zeus, who forced Cronus to regurgitate them. This event symbolizes the eventual triumph of the Olympian gods over the Titans.