I think the rule is the first Saturday after the 10th. Like in 2020, the 10th is on a Saturday (the second Saturday) but deer season will open on the 17th. Giving only 2 full weekends for blacktail deer.
Edit: Never mind about only two full weekends- I see it ends on November 1st. Has that ever happened before? I thought it ALWAYS ends on the 31st.