To assess the maximum time for sunbathing (before you get burned), consider:
The sunlight intensity;
The altitude;
The UV index of your location;
Whether you're on water or snow;
Your skin type;
Whether you're using sunscreen and what SPF you're using.
Then, use the formula:
max time = (skin type × SPF)/(UV index × altitude × water-snow factor)
Try our sunbathing calculator for more information! Read more