[Amendment10]

Noting that I’m not a medical person, you’ll need to get more opinions on vitamin D3 and safe sunlight exposure than Dr. Mercola. In a nutshell regarding Ultraviolet A & B in sunlight, UVA and UVB respectively…

• UVA raises cancer concerns. (Vitamin D3 supplement)

• UVB is what makes your skin product vitamin D3.

• Washing your skin with soap for up to 60 minutes after sunny exercise may wash your newly produced vitamin D away. (Vitamin D3 supplement)

• Essential Information About Vitamin D! (part 5 of 7)

Insights welcome.

[MtnClimber]

Interesting.

[rolling_stone]

there are calculators available
online for your location time of year time in sun..

also if supplementing vitamin d look into vitamin k
https://www.healthline.com/nutrition/vitamin-d-and-vitamin-k#section3

it can help coagulate blood so it might not be wise if one has covid..