When was dot listed on Binance?

Could you possibly enlighten me on a matter pertaining to the cryptocurrency market? I'm particularly interested in knowing when dot, presumably referring to Polkadot, was officially listed on the Binance exchange. I'm aware that Binance is a highly reputable and widely used platform for trading digital assets, and as such, the listing of dot on their exchange would have been a significant event in the crypto sphere. Given your expertise in this area, I would greatly appreciate it if you could provide me with the specific date or timeframe when this occurred. Thank you in advance for your assistance.