Jon goes international

Jon had always been interested in South America so he told Karyn "I will wish that I was born when my parents where on vacation in Argentina."
Karyn Figured her counter. She would wish Jon was born when his family was on vacation in Japan "I'm ready"
They held the stone and made their wishes at the same time
"The stone's gone" Jon said "What was your wish Karyn?"
"I wished you born when your family was on vacation in Japan"
Just then they felt major shakes quakes as their eyes were forced closed for five minutes.
When they opened their eyes again Jon looked the same but his shoes changed hue slightly
"I wish I knew how the stone made those wishes both work?" Karyn said realizing the stone reappeared on her head
A booming voice could be heard in both their minds that said "To grant these simultaneous wishes the Island of japan has been attached to Argentina and Jon was now born on the border"