Remember 'equinoctial' is linked to two specific dates: around March 20 and September 22.

Equinox Dates

'Equinoctial' implies an equal duration of daylight and nighttime, which happens twice a year.

Day & Night

'Equinoctial' also describes locations close to the equator where the sun's position changes little.

Use 'equinoctial' to describe the stable climate characteristic of equatorial regions.

'Equinoctial' can also refer to weather events that occur during equinox seasons.

Historically, sailors named storms around equinoxes 'equinoctial' due to their timing.