When do badgers leave their sets?

Badgers have distinctive black and white faces, with broad bodies on powerful short legs. They live in colonies, underground (called sets), throwing out obvious heaps of soil at the entrances to their tunnels. They emerge from their sets at dusk to forage for food. They prefer hilly districts on borders of woods or thickets with easily worked soils. They feed on earthworms and other small animals, fruits, cereals and vegetables, using well worn paths to their chosen pastures or clearings they take care to keep their sets warm and clean. Damp bedding is thrown out, and fresh, dry grass is scratched up and gathered in armfuls