The Greek summer officially ends at 4:54 a.m. on Sunday, September 23rd 2018. Blame the fall solstice or autumn equinox in the North Hemisphere. The September equinox marks the moment the Sun crosses the celestial equator – the imaginary line in the sky above the Earth’s equator – from north to south. The opposite happen … The post Autumn solstice: Greek summer officially ends at 4:54 a.m. Sunday appeared first on Keep Talking Greece.