equinoctial
Equal light, darkness
Equinoctial relates to an equinox—the two moments each year when day and night are equal length.
An equinoctial storm arrives near the spring or autumn equinox.
The equinoctial line is another term for the celestial equator.
As a noun, equinoctial can mean a severe storm occurring around an equinox: The equinoctial brought gales and flooding to the coast.
Relating to spring
- autumnalOf the harvest season
- springRecoiling metal spiral
- fallDescend under gravity
- MarchYear's third month
September · daylight · nightfall · twilight · dawn · dusk · sunrise · sunset
Of the sky above
- eclipticSun's apparent annual path
- equatorMidpoint circle of rotation
- precessionRotating axis gradually reorients
- declinationAngular distance from equator
celestial equator · celestial sphere · zodiac · constellation · orbit · azimuth · latitude · longitude
Change from one state
- changeTo make different
- shiftMovement or work period
- cycleRepeating sequence of events
- periodicityRecurring at regular intervals
annual · biannual · migration · budding · harvest · planting · lengthening · shortening
Severe sustained wind
- tempestViolent windstorm or turmoil
- squallBrief, violent windstorm
- thunderstormViolent weather with lightning
- windAir current outdoors
rough seas · maritime · sailing · nautical · cyclone · turbulence · weather
vernal
Relating to spring
March · September · daylight · nightfall · twilight · dawn · dusk · sunrise · sunset · solstice
celestial
Of the sky above
- eclipticSun's apparent annual path
- equatorMidpoint circle of rotation
- precessionRotating axis gradually reorients
declination · celestial equator · celestial sphere · zodiac · constellation · orbit · azimuth · latitude · longitude · sidereal
transition
Change from one state
periodicity · annual · biannual · migration · budding · harvest · planting · lengthening · shortening · warming
gale
Severe sustained wind
- tempestViolent windstorm or turmoil
- squallBrief, violent windstorm
- thunderstormViolent weather with lightning
wind · rough seas · maritime · sailing · nautical · cyclone · turbulence · weather
equilibrium
State of balance
equipoise · midpoint · balance point · halfway · division · threshold · pivot · turning point
equinoctialsummer solstice
Longest daylight of year
winter solstice · midsummer · midwinter · longest day · shortest day
equinoctialsummer solstice
Longest daylight of year
winter solstice · high summer · June solstice · December solstice
equal, equity, equanimity, nocturnal, equinox, nocturne, equinoxes