Eid in UAE, Saudi, Kuwait and many other countries who follow Saudi Arabia has announced Eid on Friday. They announced that Thursday will be last day for fasting. Qatar will also celebrate the festival on Friday.
In India, Eid is normally celebrated next day of Saudi Arabia so it is likely that Indians will celebrate it on Saturday 11 September. Moonsighting is expected on Thursday, September 9 in most of the world. so Eid will be on Friday, September 10 in most of the world. However, according to a new fatwa from the European Council for Fatwa and Research (ECFR), Eid-al-Fitr will be on Thursday 9th September.
Update – Eid will be celebrated on Saturday in India.