He Completed Fasting 30 Days Then Arrived in a Country Still on their 
30th day
Question

                If I were to travel on the 30th day of Ramadaan from London just after Magrib time, 
after having broken my fast and I were to arrive at my destination in the USA but to 
find that they are still in the day time of their 30th day of Ramadaan, what should I 
do?
Praise be to Allah.The reply to your question in brief is: your state should be similar to that of the [Muslim] 
inhabitants of where you are. So, if they were still observing fasting then you should observe 
fasting with them even if that means you would be fasting for more than 30 days [the max. 
number of days, normally observed in the month of Ramadaan]. This is the opinion of Shaikh 
Abdul-Azeez Ibn Baaz.