Will a full moon occurring in New York, USA be seen at the same time in Sydney, Australia? Or does the area of the planet make full moon viewing different for different regions?
Longitudes makes the difference. NY is at
Night is day for antipodal locations,
Of course, night Full Moon could possibly seen at the same time, as daytime Full Moon, at diametrically opposite locations, depending upon Moon-rise and Moon-set timings for Full Moon, at each location
Longitude difference of