Just from general reading....D3 is better absorbed by the body. Just in general, if you sit on the patio in the spring/summer for an hour...you probably get the normal dose you require. It’s the winter months that you need that ‘extra’ boost.
That would really depend on your geolocation and how au naturel you sat. Still hard to get enough sun in the spring to the north and most people are still fully clothed on their patios.
—> you probably get the normal dose you require. It’s the winter months that you need that ‘extra’ boost.
… but there is no way to know if it is enough without a blood test.