Cónocht An Earraigh
Is éard is cónocht an earraigh (nó ar a dtugtar uaireanta eacaineacht an earraigh) ná an cónocht ar an Domhan nuair is cosúil go bhfágann an pointe foghréine an leathsféar theas agus go dtrasnaíonn sé an meánchiorcal neamhaí, ag dul ó thuaidh mar a fheictear ón Domhan.
Sa leathsféar thuaidh tugtar 'cónocht an earraigh' air agus sa 'leathsféar theas' tugtar 'cónocht an fhómhair' air.
Tagairtí
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