[Black Agnes]

https://www.esrl.noaa.gov/gmd/grad/solcalc/azel.html

‘solar elevation’ above 50 deg makes D3.

The more above 50 the more D3.

After 20 min you’ve maxed out the ability to make D3 for about a day.

So, 20m on each side. Flip like bacon and try not to double expose (so you don’t burn).

If he’s not too modest to go shirtless or too ‘eaten by skeeters’, that would be ideal for D3. 20 min would do the trick.

[LilFarmer]

Yes, he’s the play frisbee/fish shirtless type. Lol