https://www.fda.gov/ForConsumers/ConsumerUpdates/ucm093704.htm

They say 0F freezer, below 40F for the fridge.

If you buy lots of milk, keeping it as close to freezing as possible extends the life greatly. Spoilage is exponential with temperature, after all.

Years ago I could keep a gallon of milk for a month if I kept it around 33F. Just a few degrees warmer would take a couple of weeks off its shelf life.

Similar issues don't exist with freezers, once the stuff is cold enough (and 0F seems to be cold enough).

Cheers,
Scott.