Categories Articles Today Is the Longest Day of the Year. Here’s What to Know About the 2018 Summer Solstice Post author By crystalg Post date June 21, 2018 TIME Tags 2018, About, Here's, Know, longest, Solstice, Summer, Today, year ← Ian Bremmer: Trump tossed candy to Merkel at G-7, said ‘don’t say I never give you anything’ → Supreme Court rules states can require online sellers to collect sales tax