1. the two times each year when the sun reaches its highest or lowest point in the sky at noon, marking the longest and shortest days
Usage: plural of solstice; astronomy

Examples

• The summer and winter solstices occur around June 21st and December 21st.
• Ancient cultures built monuments to track the solstices.
• Many festivals celebrate the solstices as turning points in the year.
• The solstices mark the beginning of summer and winter seasons.
• Stonehenge aligns with the solstices, showing its astronomical purpose.
• Daylight hours are longest during the summer solstice in the Northern Hemisphere.