Astronomical seasons are defined by the Earth’s position relative to the Sun. Their start and end dates vary slightly each year (usually by 1–2 days) due to the leap year cycle.

In the celestial clockwork of our world, the four seasons aren’t just dates on a calendar; they are the rhythmic breathing of the Earth as it tilts toward and away from the sun. The Awakening: Spring

calendar (based on Earth's position relative to the sun) or the meteorological calendar (based on temperature cycles and months).

You may hear people say that seasons actually begin "mid-month" (e.g., February 1st marks the start of Spring in some Celtic traditions).

Implications

Meteorologists (weather scientists) divide the year into four neat seasons made up of three full months each. This makes calculating weather statistics and averages much easier.

when do the four seasons start and end

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