From the “Sky” package June Solstice The longest day of the year in the Northern Hemisphere; the astronomical start of summer Historical confidence: Attested In nearby years 1403 Friday 1 Tir 1403 21 June 2024 1404 Saturday 31 Khordad 1404 21 June 2025 1405 Sunday 31 Khordad 1405 21 June 2026 1406 Monday 31 Khordad 1406 21 June 2027 1407 Tuesday 31 Khordad 1407 20 June 2028 Other occasions in this package Vernal EquinoxSeptember EquinoxDecember SolsticeNew MoonFull MoonMoon in ScorpioQuadrantids Meteor ShowerLyrids Meteor Shower