* New York's Spring: Spring in New York is from March to May (approximately).
* Hemispheres: New York is in the Northern Hemisphere. Argentina and South Africa are in the Southern Hemisphere.
* Opposite Seasons: The seasons are opposite in the Northern and Southern Hemispheres.
Therefore:
* Argentina: When it's spring in New York, it's Autumn (Fall) in Argentina.
* South Africa: Similarly, when it's spring in New York, it's Autumn (Fall) in South Africa.