Also its far from natural taking them outside in the day/light. Do you see ANY wild hedgehogs outside in the day ?? No. Do you see them going out to explore the garden in the light ?? No. So why take your pet hedgehog outside in the day, when its likely hurt the their eyes, and give them higher risks to illness. Also the sun can put them at a higher risk of skin cancer (especially albinos and pintos)
Hedgehogs are nocturnal for a reason. And hide from light for a reason.