• To naturally produce vitamin D your skin needs to be exposed to the UVB radiation.
• Unless the sun is at an elevation higher than 45° the UVB is filtered out by the atmosphere.
• At this time of the year the sun never reaches over 45° where you are. Next time it does that will be on 6 Apr 2025.

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Why is the location needed?
This site calculates whether it is possible for your body to naturally produce vitamin D from being in the sun this time of the day at your current location.

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