Our Extension office provides a chart with dates, but I couldn't find one for Mississippi. Found an article on fall planting and that was it. I'll link it.

I haven't grown fall tomatoes in years, so I'm giving that a shot this year. I'm in southern Louisiana so I need to transplant later this month. Also plan on growing bush beans, lettuce, arugula, Swiss chard, beets, and cosmos.

Here is a link that might be useful: fall gardening in Mississippi

I've got something tacked to my laundry room wall, don't remember where I got it, it is a newspaper page. It says Zones Determine Planting Dates. And it gives 5 zones for Mississippi. But I don't have the fall planting dates just the spring and summer ones. But I do have Vegetables Typically Planted in a Fall Garden for MS: bush snap beans, beets, broccoli, cabbage, carrots, cauliflower, chard, chinese cabbage, kohlrabi, lettuce, mustard, onions, radishes, rutabagas, spinach, and turnips. If you to to msucares website, just do a search, it will connect you to the extension services and master gardeners, I think, for your region. This paper that I have shows all the MS counties and what region they are in and what the median date of first freeze in fall is, and last freeze in spring. I'm in zone 5, the first to freeze and the last to thaw. Sadly.
Laurie in Tupelo area

I have a 1980s planting chart from H.G.Hastings which was in Birminghan and Atlanta. It gives a lot of information for the Southern garden. Send me your email address and I'll send you a scanned copy in PDF format.- Terry