Suitable sunlight for the synthesis of vitamin D should be light sunlight. That does not burn and cause long-term damage to the skin. The duration of exposure to sunlight depends on the skin condition of each person body. But a reasonable average is around 10–15 minutes per day. 

The appropriate time to receive vitamin D from sunlight depends on many factors. Because each country or even areas within the same country are different in terms of geography, region, and weather. UFABET 

Moreover, the amount of vitamin D synthesis depends on other factors, such as the application of sunscreen. Air pollution, season, weather, geography, amount of clouds that block UVB rays from the sun, and skin type according to race as well. 

People with darker skin tones have a higher amount of melanin that helps protect the skin from UV rays than people with lighter skin tones. This causes it to take longer to synthesize vitamin D from sunlight. People with darker skin should be exposed to sunlight for a longer period of time. As for people with light and thin skin, they should not be exposed to UV rays from the sun for a long time. Because there is a higher risk of skin diseases from sunlight, such as freckles or sunburn.

However, if the sunlight that hits the skin has too much UV ray intensity, especially bright sunlight during noon. It may cause damage to the skin and cause wrinkles on the face. and increase the risk of causing skin cancer as well