45th, 5000 daily in winter, 1000 in summer.
Good for you. Y’all can get better bioavailability with food if you prefer over supplementation.
Top Foods Rich in Vitamin D
https://www.verywellhealth.com/foods-rich-in-vitamin-d-8348470
Up there at the 45th you ought to be able to get a lot of delicious cold water fish.
For those below the 35th there is a cool app for your phone called D-minder. It will tell you when Vit-D absorption is available during the day and you can also track your exposure.
Two big points that a lot of folks don’t know about Vit-D absorption.
1. Your EYES tell your body to absorb the D. The UV is the trigger. If you are always wearing sunglasses, wearing poisonous sunscreen, or sitting behind your UV blocking windows the absorption isn’t going to happen.
2. Soap is the enemy of Vit-D absorption. IF you take a daily shower and use soap on the exposed parts of the skin, you are washing off the cholesterol on your skin that facilitates the absorption. Just rinse those parts until 48 hrs after exposure.
Otherwise, GET IN THE SUN!