When was Echelon Prime listed on Coinbase?

Could you please clarify when Echelon Prime was officially listed on the Coinbase exchange? I've been eagerly awaiting this listing as it's been highly anticipated in the cryptocurrency community. With Coinbase being one of the largest and most trusted digital currency exchanges, it's a significant milestone for Echelon Prime to achieve. I'm curious to know the exact date when this listing occurred as it would likely have had a significant impact on the token's price and overall market sentiment. Thank you for your assistance in providing this information.