When Is The Autumn Equinox 2024 Australia. Autumn equinox 2024 occurs sunday 22 september at 12:44pm (13:44 utc), as this is when the centre of the sun crosses the celestial equator. The first day of autumn often called fall (september equinox or autumnal equinox) is when the sun shines directly on the celestial equator passing from north to.
The summer solstice is also known as the longest day, which is perhaps the most notable feature. Autumn in australia begins on march 20 or 21 and ends on june 20 or 21, placing it between summer and winter.
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