{"id":1535,"date":"2025-08-28T20:51:33","date_gmt":"2025-08-28T20:51:33","guid":{"rendered":"https:\/\/dailyfoodserve.com\/shop\/?p=1535"},"modified":"2025-08-28T20:51:36","modified_gmt":"2025-08-28T20:51:36","slug":"vitamin-d-from-sunlight-timing-myths-and-the-shadow-rule","status":"publish","type":"post","link":"https:\/\/dailyfoodserve.com\/shop\/vitamin-d-from-sunlight-timing-myths-and-the-shadow-rule\/","title":{"rendered":"Vitamin D from Sunlight: Timing, Myths, and the Shadow Rule"},"content":{"rendered":"\n<p>Many people don\u2019t realize that&nbsp;<strong>midday sun<\/strong>&nbsp;gives the best vitamin D, not the early morning or late afternoon. In fact, while any sunlight feels warm in the morning or evening, it\u2019s mostly UVA rays (which help mood) \u2013&nbsp;<em>not<\/em>&nbsp;the UVB rays needed to make vitamin D<a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=,the%20ground%2C%20and%20your%20skin\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a>. Health experts now say that the brief midday sun (roughly 10AM\u20132PM) is when UVB peaks, so your skin can produce vitamin D most effectively<a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=Vitamin%20D%2C%20also%20known%20as,of%20year%2C%20latitude%2C%20weather%2C%20air\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=Time%20of%20day%20%E2%80%93%20vitamin,skin%20can%20make%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Morning\/evening sun myth:<\/strong>\u00a0Early and late sun is lower in the sky, so nearly all UVB is filtered out by the atmosphere. GrassrootsHealth explains that \u201cearly morning and early evening light only provide UVA\u2026 not UVB which is necessary for vitamin D production\u201d<a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=,the%20ground%2C%20and%20your%20skin\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a>. In other words, you won\u2019t make much vitamin D from sunrise or sunset sun. This is why decades-old advice (\u201cavoid midday sun, get morning sun for D\u201d) is outdated: by avoiding midday you actually miss the UVB needed to make vitamin D<a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=If%20we%20need%20to%20be,of%20Americans%20are\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=Time%20of%20day%20%E2%80%93%20vitamin,skin%20can%20make%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a>.<\/li>\n\n\n\n<li><strong>Midday sun is best:<\/strong>\u00a0Between about 10 AM and 2 PM is prime time for vitamin D. During these hours the sun is highest, UVB is strongest, and the UV index is usually above 3 \u2013 the threshold for vitamin D synthesis<a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=Vitamin%20D%2C%20also%20known%20as,of%20year%2C%20latitude%2C%20weather%2C%20air\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=Time%20of%20day%20%E2%80%93%20vitamin,skin%20can%20make%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a>. For example, on a sunny day most people can get enough vitamin D with just 10\u201315 minutes of midday sun on arms and legs<a href=\"https:\/\/www.health.harvard.edu\/staying-healthy\/time-for-more-vitamin-d#:~:text=Under%20the%20right%20circumstances%2C%2010,of%20UVB%20that%20reaches%20your\" target=\"_blank\" rel=\"noreferrer noopener\">health.harvard.edu<\/a>.<\/li>\n\n\n\n<li><strong>Season and latitude matter:<\/strong>\u00a0In winter or at high latitudes, even midday sun may not be enough. Harvard Health notes that above about 37\u00b0 latitude (north or south), the sun is too low in winter to make vitamin D<a href=\"https:\/\/www.health.harvard.edu\/staying-healthy\/time-for-more-vitamin-d#:~:text=Except%20during%20the%20summer%20months%2C,risk%20for%20vitamin%20D%20deficiency\" target=\"_blank\" rel=\"noreferrer noopener\">health.harvard.edu<\/a>. This means countries like the UK or parts of Canada get almost no vitamin D from November to February. By contrast, tropical countries (India, Brazil) get ample UVB year-round, although still mainly at midday<a href=\"https:\/\/www.health.harvard.edu\/staying-healthy\/time-for-more-vitamin-d#:~:text=Except%20during%20the%20summer%20months%2C,risk%20for%20vitamin%20D%20deficiency\" target=\"_blank\" rel=\"noreferrer noopener\">health.harvard.edu<\/a><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=Time%20of%20day%20%E2%80%93%20vitamin,skin%20can%20make%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a>.<\/li>\n\n\n\n<li><strong>Chart by country (seasonal):<\/strong>\u00a0Roughly speaking, in\u00a0<strong>summer<\/strong>\u00a0months the midday window for vitamin D is wide in all these countries, peaking around noon. In\u00a0<strong>winter<\/strong>, high-latitude countries (UK, Canada, northern US) have only a brief or no midday UVB window, so vitamin D potential is very low. Mid-latitude India sees moderate winter sun, and tropical Brazil\/Australia still have strong mid-day UV even in \u201cwinter.\u201d (See infographic chart below for a visual hourly view by season and country.)<\/li>\n\n\n\n<li><strong>The Shadow Rule:<\/strong>\u00a0A simple \u201cshadow test\u201d tells you if the sun is high enough. Stand outside and look at your shadow. If your\u00a0<strong>shadow is shorter than your height<\/strong>, the sun\u2019s angle is steep and UVB is reaching you \u2013 your skin can make vitamin D<a href=\"https:\/\/theros.org.uk\/blog\/vitamin-d-welcome-to-the-sunlight-zone\/#:~:text=To%20check%20it%E2%80%99s%20the%20right,able%20to%20produce%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">theros.org.uk<\/a><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=,the%20ground%2C%20and%20your%20skin\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a>. If your shadow is longer than you, the sun is too low and you won\u2019t make much vitamin D<a href=\"https:\/\/theros.org.uk\/blog\/vitamin-d-welcome-to-the-sunlight-zone\/#:~:text=To%20check%20it%E2%80%99s%20the%20right,able%20to%20produce%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">theros.org.uk<\/a>. In other words:\u00a0<em>the shorter your shadow, the better for vitamin D<\/em>.<\/li>\n<\/ul>\n\n\n\n<p><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=,the%20ground%2C%20and%20your%20skin\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a><a href=\"https:\/\/theros.org.uk\/blog\/vitamin-d-welcome-to-the-sunlight-zone\/#:~:text=To%20check%20it%E2%80%99s%20the%20right,able%20to%20produce%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">theros.org.uk<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why Morning Sun Can\u2019t Make Vitamin D<\/h2>\n\n\n\n<p>Even though sunrise light feels nice, it doesn\u2019t trigger vitamin D. This is because the long path through the atmosphere filters out UVB rays in the morning and evening. As GrassrootsHealth explains, \u201cearly morning and early evening light only provide UVA\u2026 not UVB\u201d<a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=,the%20ground%2C%20and%20your%20skin\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a>. Only UVB (not UVA) kick-starts vitamin D production in skin. Midday sun, when the sun is highest, lets UVB through. So the idea that&nbsp;<em>\u201cmorning\/evening sun is better for vitamin D\u201d<\/em>&nbsp;is a myth. In fact, by avoiding midday sun we miss the very UVB rays we need<a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=If%20we%20need%20to%20be,of%20Americans%20are\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=Time%20of%20day%20%E2%80%93%20vitamin,skin%20can%20make%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The Shadow Rule \u2013 Sunlight Window for Vitamin D<\/h2>\n\n\n\n<p>Instead of guessing the clock, use your shadow. The&nbsp;<strong>shadow rule<\/strong>&nbsp;is easy: when your shadow is shorter than you, you\u2019re in the \u201cvitamin D zone\u201d<a href=\"https:\/\/theros.org.uk\/blog\/vitamin-d-welcome-to-the-sunlight-zone\/#:~:text=To%20check%20it%E2%80%99s%20the%20right,able%20to%20produce%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">theros.org.uk<\/a><a href=\"https:\/\/shadowmap.org\/learn\/sunlight-and-vitamin-d-how-much-do-you-need#:~:text=A%20simple%20rule%20of%20thumb,vitamin%20D%2C%20if%20you%20need\" target=\"_blank\" rel=\"noreferrer noopener\">shadowmap.org<\/a>. For example, if you stand at noon in summer and barely cast a shadow, your skin can make vitamin D. But early or late in the day your shadow is long, meaning the sun is too low. Royal Osteoporosis Society and others agree: \u201cIf your shadow is shorter than your height, your body can produce vitamin D from sunlight\u201d<a href=\"https:\/\/theros.org.uk\/blog\/vitamin-d-welcome-to-the-sunlight-zone\/#:~:text=To%20check%20it%E2%80%99s%20the%20right,able%20to%20produce%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">theros.org.uk<\/a>. (Our infographic below summarizes this myth vs truth visually.)<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>How to use it:<\/strong>\u00a0Go outside midday and see: if your shadow\u00a0<em>measures shorter<\/em>\u00a0than your height, you\u2019re getting UVB. If it\u2019s longer (you\u2019re taller than your shadow), wait until closer to noon.<\/li>\n<\/ul>\n\n\n\n<p><a href=\"https:\/\/theros.org.uk\/blog\/vitamin-d-welcome-to-the-sunlight-zone\/#:~:text=To%20check%20it%E2%80%99s%20the%20right,able%20to%20produce%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">theros.org.uk<\/a><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=,the%20ground%2C%20and%20your%20skin\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Seasonal Differences by Country<\/h2>\n\n\n\n<p>Vitamin D from sunlight varies with latitude and season. Here\u2019s a quick country-by-country rundown in simple terms (sunlight hours and intensity are&nbsp;<em>approximate<\/em>):<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>United States (\u224838\u00b0N):<\/strong>\u00a0<em>Summer:<\/em>\u00a0Strong midday sun gives a long window (about 10\u202fAM\u20134\u202fPM) for vitamin D, peaking near noon.\u00a0<em>Winter:<\/em>\u00a0Sun is low; only a very brief midday window (if any) can make vitamin D \u2013 much less than summer. (Above 37\u00b0N, winter sun barely makes any vitamin D<a href=\"https:\/\/www.health.harvard.edu\/staying-healthy\/time-for-more-vitamin-d#:~:text=Except%20during%20the%20summer%20months%2C,risk%20for%20vitamin%20D%20deficiency\" target=\"_blank\" rel=\"noreferrer noopener\">health.harvard.edu<\/a>.)<\/li>\n\n\n\n<li><strong>United Kingdom (\u224852\u00b0N):<\/strong>\u00a0<em>Summer:<\/em>\u00a0Midday sun (12\u202fPM\u20132\u202fPM) can make some vitamin D, though days are short.\u00a0<em>Winter:<\/em>\u00a0Sun angle is too low; essentially zero vitamin D from sunlight until spring<a href=\"https:\/\/www.health.harvard.edu\/staying-healthy\/time-for-more-vitamin-d#:~:text=Except%20during%20the%20summer%20months%2C,risk%20for%20vitamin%20D%20deficiency\" target=\"_blank\" rel=\"noreferrer noopener\">health.harvard.edu<\/a>.<\/li>\n\n\n\n<li><strong>Canada (\u224845\u00b0N):<\/strong>\u00a0<em>Summer:<\/em>\u00a0Similar to northern US, decent midday UV.\u00a0<em>Winter:<\/em>\u00a0Very little UVB; shadow rule says no vitamin D production<a href=\"https:\/\/www.health.harvard.edu\/staying-healthy\/time-for-more-vitamin-d#:~:text=Except%20during%20the%20summer%20months%2C,risk%20for%20vitamin%20D%20deficiency\" target=\"_blank\" rel=\"noreferrer noopener\">health.harvard.edu<\/a>.<\/li>\n\n\n\n<li><strong>India (\u224828\u00b0N):<\/strong>\u00a0<em>Summer:<\/em>\u00a0Strong year-round sun; lots of UVB.\u00a0<em>Winter:<\/em>\u00a0Still good sun at midday (around 10\u202fAM\u20133\u202fPM) \u2013 vitamin D can be made much of the year.<\/li>\n\n\n\n<li><strong>Brazil (\u224815\u00b0S):<\/strong>\u00a0<em>Southern Summer (Dec\u2013Feb):<\/em>\u00a0High tropical sun, long UVB availability (noon peak).\u00a0<em>Southern Winter (Jun\u2013Aug):<\/em>\u00a0Even in June the sun is quite strong (sun near overhead), so vitamin D production remains possible midday.<\/li>\n\n\n\n<li><strong>Australia (\u224835\u00b0S):<\/strong>\u00a0Seasons reversed.\u00a0<em>Southern Summer (Dec\u2013Feb):<\/em>\u00a0Very strong sun (vitamin D easily made midday).\u00a0<em>Southern Winter (Jun\u2013Aug):<\/em>\u00a0Sun lower but still fairly strong around noon; shorter midday window but still some UVB.<\/li>\n<\/ul>\n\n\n\n<p>In summary:&nbsp;<strong>all countries<\/strong>&nbsp;get the most vitamin D around noon, but higher latitudes (UK\/Canada\/Northern US) have a much shorter \u201cUVB season\u201d (only late spring to early fall). Lower-latitude countries (India, Brazil, Australia) have UVB-capable sun most of the year, especially at midday<a href=\"https:\/\/www.health.harvard.edu\/staying-healthy\/time-for-more-vitamin-d#:~:text=Except%20during%20the%20summer%20months%2C,risk%20for%20vitamin%20D%20deficiency\" target=\"_blank\" rel=\"noreferrer noopener\">health.harvard.edu<\/a><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=Time%20of%20day%20%E2%80%93%20vitamin,skin%20can%20make%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How Much Sun and Safety Tips<\/h2>\n\n\n\n<p>Under ideal conditions, very little time in midday sun is needed. Harvard experts note that&nbsp;<em>\u201c10 to 15 minutes of sun on the arms and legs a few times a week can generate nearly all the vitamin D we need\u201d<\/em><a href=\"https:\/\/www.health.harvard.edu\/staying-healthy\/time-for-more-vitamin-d#:~:text=Under%20the%20right%20circumstances%2C%2010,of%20UVB%20that%20reaches%20your\" target=\"_blank\" rel=\"noreferrer noopener\">health.harvard.edu<\/a>. However, many factors (skin type, clothing, pollution, glass) affect this. Always balance sun time with skin protection: after the few minutes needed for vitamin D, put on sunscreen or cover up to prevent sunburn and skin damage. (Sunscreen won\u2019t completely block vitamin D if used after initial exposure, and over time the body self-limits vitamin D production to prevent overdose.)&nbsp;<\/p>\n\n\n\n<p><strong>Pro tip:<\/strong>&nbsp;Check the UV index. If it\u2019s under 3, the sun isn\u2019t strong enough for vitamin D production<a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=Vitamin%20D%2C%20also%20known%20as,of%20year%2C%20latitude%2C%20weather%2C%20air\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a>. Most weather forecasts show the UV index \u2013 aim for midday when it\u2019s high (and remember shadow rule).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Key Takeaways<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Midday sun gives vitamin D:<\/strong>\u00a0The sun\u2019s UVB rays peak roughly 10\u202fAM\u20132\u202fPM, so this is when your skin makes the most vitamin D<a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=Vitamin%20D%2C%20also%20known%20as,of%20year%2C%20latitude%2C%20weather%2C%20air\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=Time%20of%20day%20%E2%80%93%20vitamin,skin%20can%20make%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a>.<\/li>\n\n\n\n<li><strong>Morning\/evening myth:<\/strong>\u00a0Sunlight during those times is mostly UVA (no vitamin D). Don\u2019t skip noon sun if safe \u2013 that\u2019s when UVB is strongest<a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=,the%20ground%2C%20and%20your%20skin\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=If%20we%20need%20to%20be,of%20Americans%20are\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a>.<\/li>\n\n\n\n<li><strong>Use the shadow rule:<\/strong>\u00a0If you stand outside and your shadow is\u00a0<strong>shorter<\/strong>\u00a0than you, you\u2019re making vitamin D. If it\u2019s longer, wait or move to midday sun<a href=\"https:\/\/theros.org.uk\/blog\/vitamin-d-welcome-to-the-sunlight-zone\/#:~:text=To%20check%20it%E2%80%99s%20the%20right,able%20to%20produce%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">theros.org.uk<\/a><a href=\"https:\/\/shadowmap.org\/learn\/sunlight-and-vitamin-d-how-much-do-you-need#:~:text=A%20simple%20rule%20of%20thumb,vitamin%20D%2C%20if%20you%20need\" target=\"_blank\" rel=\"noreferrer noopener\">shadowmap.org<\/a>.<\/li>\n\n\n\n<li><strong>Season and location matter:<\/strong>\u00a0Higher latitudes get strong sun only in summer; near the equator or tropics, good sun is year-round. In winter at high latitudes, sunlight alone is often insufficient<a href=\"https:\/\/www.health.harvard.edu\/staying-healthy\/time-for-more-vitamin-d#:~:text=Except%20during%20the%20summer%20months%2C,risk%20for%20vitamin%20D%20deficiency\" target=\"_blank\" rel=\"noreferrer noopener\">health.harvard.edu<\/a><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=Time%20of%20day%20%E2%80%93%20vitamin,skin%20can%20make%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a>.<\/li>\n\n\n\n<li><strong>Stay skin-safe:<\/strong>\u00a0A few minutes of midday sun (depending on skin color and weather) can help boost vitamin D. Then protect your skin to avoid sunburn.<\/li>\n<\/ul>\n\n\n\n<p>Understanding&nbsp;<em>when<\/em>&nbsp;and&nbsp;<em>how<\/em>&nbsp;sun exposure makes vitamin D helps you get enough while staying safe. For most people, a short daily break in the noonday sun (and checking the shadow rule) is an easy way to top up vitamin D naturally \u2013 just don\u2019t fall for the morning-sun myth!&nbsp;<\/p>\n\n\n\n<p><strong>Keywords:<\/strong>&nbsp;vitamin D sunlight, sun exposure chart, morning vs midday vitamin D, UVB shadow rule, vitamin D seasonal differences<a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=,the%20ground%2C%20and%20your%20skin\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth.net<\/a><a href=\"https:\/\/theros.org.uk\/blog\/vitamin-d-welcome-to-the-sunlight-zone\/#:~:text=To%20check%20it%E2%80%99s%20the%20right,able%20to%20produce%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">theros.org.uk<\/a><\/p>\n\n\n\n<p>Citations<\/p>\n\n\n\n<p><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=,the%20ground%2C%20and%20your%20skin\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/p>\n\n\n\n<figure class=\"wp-block-image\"><a class=\"hover:bg-token-main-surface-secondary flex flex-col gap-0.5 rounded-xl px-3 py-2.5\" href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=,the%20ground%2C%20and%20your%20skin\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"https:\/\/www.google.com\/s2\/favicons?domain=https:\/\/www.grassrootshealth.net&amp;sz=32\" alt=\"\"\/><\/a><\/figure>\n\n\n\n<p><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=,the%20ground%2C%20and%20your%20skin\" target=\"_blank\" rel=\"noreferrer noopener\">Your Shadow Can Tell You if it&#8217;s the Right Time to Make Vitamin D &#8211; GrassrootsHealth<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=,the%20ground%2C%20and%20your%20skin\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/<\/a><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=Vitamin%20D%2C%20also%20known%20as,of%20year%2C%20latitude%2C%20weather%2C%20air\" target=\"_blank\" rel=\"noreferrer noopener\">Your Shadow Can Tell You if it&#8217;s the Right Time to Make Vitamin D &#8211; GrassrootsHealthhttps:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/<\/a><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=Time%20of%20day%20%E2%80%93%20vitamin,skin%20can%20make%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">Your Shadow Can Tell You if it&#8217;s the Right Time to Make Vitamin D &#8211; GrassrootsHealthhttps:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/<\/a><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=If%20we%20need%20to%20be,of%20Americans%20are\" target=\"_blank\" rel=\"noreferrer noopener\">Your Shadow Can Tell You if it&#8217;s the Right Time to Make Vitamin D &#8211; GrassrootsHealthhttps:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/<\/a><a href=\"https:\/\/www.health.harvard.edu\/staying-healthy\/time-for-more-vitamin-d#:~:text=Under%20the%20right%20circumstances%2C%2010,of%20UVB%20that%20reaches%20your\" target=\"_blank\" rel=\"noreferrer noopener\">Time for more vitamin D &#8211; Harvard Healthhttps:\/\/www.health.harvard.edu\/staying-healthy\/time-for-more-vitamin-d<\/a><a href=\"https:\/\/www.health.harvard.edu\/staying-healthy\/time-for-more-vitamin-d#:~:text=Except%20during%20the%20summer%20months%2C,risk%20for%20vitamin%20D%20deficiency\" target=\"_blank\" rel=\"noreferrer noopener\">Time for more vitamin D &#8211; Harvard Healthhttps:\/\/www.health.harvard.edu\/staying-healthy\/time-for-more-vitamin-d<\/a><a href=\"https:\/\/theros.org.uk\/blog\/vitamin-d-welcome-to-the-sunlight-zone\/#:~:text=To%20check%20it%E2%80%99s%20the%20right,able%20to%20produce%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">Vitamin D: welcome to the \u2018sunlight zone\u2019https:\/\/theros.org.uk\/blog\/vitamin-d-welcome-to-the-sunlight-zone\/<\/a><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=,the%20ground%2C%20and%20your%20skin\" target=\"_blank\" rel=\"noreferrer noopener\">Your Shadow Can Tell You if it&#8217;s the Right Time to Make Vitamin D &#8211; GrassrootsHealthhttps:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/<\/a><a href=\"https:\/\/shadowmap.org\/learn\/sunlight-and-vitamin-d-how-much-do-you-need#:~:text=A%20simple%20rule%20of%20thumb,vitamin%20D%2C%20if%20you%20need\" target=\"_blank\" rel=\"noreferrer noopener\">Sunlight and Vitamin D \u2013 How much do you need?https:\/\/shadowmap.org\/learn\/sunlight-and-vitamin-d-how-much-do-you-need<\/a><\/p>\n\n\n\n<p>All Sources<\/p>\n\n\n\n<p><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=,the%20ground%2C%20and%20your%20skin\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/p>\n\n\n\n<figure class=\"wp-block-image\"><a class=\"group hover:bg-token-main-surface-secondary flex items-center gap-0.5 rounded-xl px-3 py-2.5\" href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=,the%20ground%2C%20and%20your%20skin\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"https:\/\/www.google.com\/s2\/favicons?domain=https:\/\/www.grassrootshealth.net&amp;sz=32\" alt=\"\"\/><\/a><\/figure>\n\n\n\n<p><a href=\"https:\/\/www.grassrootshealth.net\/blog\/shadow-can-tell-right-time-make-vitamin-d\/#:~:text=,the%20ground%2C%20and%20your%20skin\" target=\"_blank\" rel=\"noreferrer noopener\">grassrootshealth<\/a><a href=\"https:\/\/www.health.harvard.edu\/staying-healthy\/time-for-more-vitamin-d#:~:text=Under%20the%20right%20circumstances%2C%2010,of%20UVB%20that%20reaches%20your\" target=\"_blank\" rel=\"noreferrer noopener\">health.harvard<\/a><a href=\"https:\/\/theros.org.uk\/blog\/vitamin-d-welcome-to-the-sunlight-zone\/#:~:text=To%20check%20it%E2%80%99s%20the%20right,able%20to%20produce%20vitamin%20D\" target=\"_blank\" rel=\"noreferrer noopener\">theros.org<\/a><a href=\"https:\/\/shadowmap.org\/learn\/sunlight-and-vitamin-d-how-much-do-you-need#:~:text=A%20simple%20rule%20of%20thumb,vitamin%20D%2C%20if%20you%20need\" target=\"_blank\" rel=\"noreferrer noopener\">shadowmap<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Many people don\u2019t realize that&nbsp;midday sun&nbsp;gives the best vitamin D, not the early morning or late afternoon. In fact, while any sunlight feels warm in the morning or evening, it\u2019s mostly UVA rays (which help mood) \u2013&nbsp;not&nbsp;the UVB rays needed to make vitamin Dgrassrootshealth.net. Health experts now say that the brief midday sun (roughly 10AM\u20132PM)&hellip;&nbsp;<a href=\"https:\/\/dailyfoodserve.com\/shop\/vitamin-d-from-sunlight-timing-myths-and-the-shadow-rule\/\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Vitamin D from Sunlight: Timing, Myths, and the Shadow Rule<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":1536,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[1,124],"tags":[609,614,613,612,610,608,611,607],"class_list":["post-1535","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-vitamin","tag-and-see-how-seasons-and-latitude-affect-vitamin-d-in-the-us","tag-and-australia","tag-brazil","tag-canada","tag-india","tag-learn-how-sunshine-makes-vitamin-d-and-when-its-strongest-debunk-the-myth-about-morning-evening-sun","tag-uk","tag-use-the-simple-shadow-rule"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Vitamin D from Sunlight: Timing, Myths, and the Shadow Rule - Daily Food Serve %<\/title>\n<meta name=\"description\" content=\"Learn how sunshine makes vitamin D and when it\u2019s strongest. 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