SGX Nifty Trading and Its movement

Dear All,

How can a person trade in SGX NIFTY in Singapore as I understand that the NIFTY moves only when there are buying and selling in the 50 underlying stocks which happens in India but SGX opens much before that. How does this happen, can someone explain please?

Thanks for the link Neha. If this is the case, then it doesn’t constitute the 50 underlying stocks to calculate the futures price movement?