How long do you have to wait after getting your nose pierced?

I had my nose pierced six weeks ago and was never warned about risks relating to staying out in the sun too long. I can hardly see the sun as causing a problem with healing - in fact, you get vitamin D from the sun which is important for healing. If you plan on sunbathing for hours on end immediately after the piercing, just make sure you don't get burnt or your skin may start peeling around the piercing and dead skin could get caught and get it infected. But I can't imagine staying out in the sun would be a risk.