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When does summer start and other summer facts you should know.
Tree pollen occurs first, typically from late March to mid-May. Grass (which actually has two peaks) lasts from mid-May until July, and weed pollen covers the end of June to September.
Usually when we talk about the first day of summer we are referring to the astronomical summer which is defined by the Earth's axis and orbit around the sun.
You can’t see UV but its damaging effects can stay with you for life. In fact, eyes are 10 times more sensitive to UV than skin.
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