When was Zil Coin launched?

Excuse me, I was wondering if you could provide me with some information regarding the launch date of Zil Coin. I'm particularly interested in knowing when this cryptocurrency was first introduced to the market. I understand that such details can be crucial in understanding the evolution and maturity of a project, so I'm hoping you might have some insight to share. Would you be able to enlighten me on the specific date or perhaps the timeframe during which Zil Coin made its debut?