Turtle release

It seems there have been a turtle release everyweek at playa LaRopa since mid December at least. People in charge are wearing zihua city shirts. They operate just before sunset. I was close by on December 13th (a Tuesday). They had more than a hundred turtles in their baskets. I saw another one the 19th (a Monday) and one last week, I can’t remember the day.
According to a trinket vendor we met last Tuesday at El Manglar, this week was supposed to be on Wednesday… no pattern.
If somebody knows where to find a schedule on the internet, please post the info.