7 billionth baby born

[shootingstar]

http://www.theglobeandmail.com/news/world/worldview/its-a-girl-world-celebrates-the-7-billionth-person/article2219666/

A bit of minor debate whether it was a baby born in Philippines or in India. Probably both, depending on time zone.

[Bike Chick]

How do they really know for sure? I may be ignorant but I don't understand how they really know.