summer solstice

E1038678

astronomical event celestial phenomenon solstice

The summer solstice is the longest day of the year in terms of daylight, marking the peak of the Sun’s annual path in the sky and the official start of astronomical summer in many cultures.

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Statements (50)

Predicate	Object
instanceOf	astronomical event ⓘ celestial phenomenon ⓘ solstice ⓘ
associatedWith	agricultural calendars ⓘ fertility rituals in some cultures ⓘ midsummer festivals ⓘ
cause	tilt of the Earth’s rotational axis relative to its orbital plane ⓘ
celebratedAt	Newgrange NERFINISHED ⓘ Stonehenge NERFINISHED ⓘ various megalithic sites ⓘ
follows	vernal equinox ⓘ
hasApproximateDate	around December 20–23 in the Southern Hemisphere ⓘ around June 20–22 in the Northern Hemisphere ⓘ
hasCulturalSignificanceIn	East Asian traditions ⓘ European traditions ⓘ Indigenous American traditions ⓘ
hasDayLength	approximately 24 hours of daylight at the Antarctic Circle during the respective hemisphere’s summer ⓘ approximately 24 hours of daylight at the Arctic Circle ⓘ
hasDefinition	the moment when the Sun reaches its maximum declination relative to the celestial equator in the relevant hemisphere ⓘ
hasEffect	Sun reaches its highest noon altitude in the sky for the year in its hemisphere ⓘ shadows at local noon are shortest of the year in its hemisphere ⓘ
hasEtymology	from Latin solstitium meaning Sun standing still ⓘ
hasMaximum	length of daylight in its hemisphere GENERATED ⓘ solar declination in its hemisphere GENERATED ⓘ
hasMinimum	length of night in its hemisphere ⓘ
hasProperty	longest day of the year in terms of daylight in its hemisphere ⓘ marks the peak of the Sun’s apparent annual path in the sky ⓘ marks the start of astronomical summer in many cultures ⓘ
hasSolarLongitude	270 degrees in the Southern Hemisphere ⓘ 90 degrees in the Northern Hemisphere ⓘ
measuredIn	solar longitude ⓘ
observedBy	many ancient civilizations ⓘ modern astronomical observatories ⓘ
occursIn	Northern Hemisphere NERFINISHED ⓘ Southern Hemisphere NERFINISHED ⓘ
oppositeEvent	winter solstice ⓘ
perceivedAs	Sun appears to pause in its northward or southward motion before reversing direction ⓘ
precedes	autumnal equinox NERFINISHED ⓘ
relatedCalendarSystem	Gregorian calendar GENERATED ⓘ Julian calendar GENERATED ⓘ
relatedTo	Earth axial tilt ⓘ celestial equator ⓘ ecliptic ⓘ
timeStandard	defined in Terrestrial Time for precise astronomical calculations ⓘ
usedFor	calibrating solar calendars ⓘ defining the start of astronomical summer ⓘ orientation of some ancient monuments ⓘ
variesDueTo	irregularities in Earth’s orbit ⓘ leap years ⓘ precession of the equinoxes ⓘ

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

Midsummer celebrations → basedOn → summer solstice ⓘ