The September or autumnal equinox takes place tonight and marks the astronomical beginning of autumn in the Northern Hemisphere and spring in the Southern Hemisphere.
Joining Seán to discuss this is Editor of Astronomy Ireland Magazine, David Moore…
Autumnal Equinox takes place tonight - what to expect
The September or autumnal equinox takes place tonight and marks the astronomical beginning of aut...
14.59 22 Sep 2026
