| Season | Start Date (approx.) | End Date (approx.) | Key Event | |--------|----------------------|--------------------|------------| | | March 19–21 | June 20–21 | Vernal (Spring) Equinox – equal day & night | | Summer | June 20–21 | September 22–23 | Summer Solstice – longest day of the year | | Fall (Autumn) | September 22–23 | December 21–22 | Autumnal Equinox – equal day & night | | Winter | December 21–22 | March 19–21 | Winter Solstice – shortest day of the year |

| Season | Start Date | End Date | |--------|------------|----------| | | March 1 | May 31 | | Summer | June 1 | August 31 | | Fall | September 1 | November 30 | | Winter | December 1 | February 28 (or 29) |

These are the most commonly referenced dates in calendars, determined by the solstices and equinoxes. Dates can vary by one day from year to year (usually June 20/21 or Dec 21/22).

Seasons In America Dates -

| Season | Start Date (approx.) | End Date (approx.) | Key Event | |--------|----------------------|--------------------|------------| | | March 19–21 | June 20–21 | Vernal (Spring) Equinox – equal day & night | | Summer | June 20–21 | September 22–23 | Summer Solstice – longest day of the year | | Fall (Autumn) | September 22–23 | December 21–22 | Autumnal Equinox – equal day & night | | Winter | December 21–22 | March 19–21 | Winter Solstice – shortest day of the year |

| Season | Start Date | End Date | |--------|------------|----------| | | March 1 | May 31 | | Summer | June 1 | August 31 | | Fall | September 1 | November 30 | | Winter | December 1 | February 28 (or 29) | seasons in america dates

These are the most commonly referenced dates in calendars, determined by the solstices and equinoxes. Dates can vary by one day from year to year (usually June 20/21 or Dec 21/22). | Season | Start Date (approx