How much chronological time has passed on Ozark?

Vulture

"That one sounds like it should be simple to answer, but so much happens in each episode of Ozark that it’s easy to lose track of whether a day or a week has elapsed," says Jen Chaney. After delving into each season, Chaney concluded: "The events on Ozark have so far, not counting flashbacks, taken place over the course of one year and three months. The less you think about the details that contradict this timeline, the saner you will be. Trust me."