If its Winter in Australia when its Summer in UK and visaversa. What season is it in between.....The Equator?

the equator has 2 seasons. Spring and summer. When it is spring time here, or australia, then the sun is directly overhead at the equator, meaning summer for them. When it is summer or winter here, that means that the sun is on either the tropic of cancer (23 1/2 degrees north) or on the tropic of capricorn (23 1/2 degrees south) meaning it is spring there.