Answer
Rasulullah (Sallallaahu Alayhi Wasallam) has not made Makkah the criteria
for announcement of fast. Rather, he (Sallallaahu Alayhi Wasallam) has made
the citing of the moon the criteria for commencement of fasting.
and Allah Ta’ala Knows Best
Mufti Ebrahim Desai
FATWA DEPT.