When was TON Coin launched?

Could you possibly enlighten me as to the precise timing of TON Coin's initial launch? I'm particularly interested in understanding when this cryptocurrency first made its appearance on the market. It's quite fascinating to trace the emergence of such innovative digital assets, and I'm keen to learn more about TON Coin's journey from inception to its current state. Could you please provide me with a detailed timeline or any relevant information that might assist me in understanding this matter further?