Who are listed by Wikipedia as the observers of Eid al-Fitr?

Wikipedia lists Muslims as the observers of Eid al-Fitr.

Eid al-Fitr is one of the two major Islamic festivals. It begins when Ramadan ends and the month of Shawwal starts, although the exact calendar date varies because the Islamic calendar is lunar and communities may rely on local moon sighting or astronomical calculations. Muslims typically mark the festival with a special congregational prayer, charitable giving, family visits, festive meals, and greetings such as “Eid Mubarak.”

The wording “observers” refers to the religious community that celebrates the festival, not to every person who may participate in a public event or extend good wishes. Muslims around the world observe Eid, including Sunni, Shia, and other Muslim communities, though customs and prayer practices can differ by region.

Buddhists, Hindus, and Christians have their own religious calendars and festivals, so they are not the canonical answer to this question. Some non-Muslims may join family or community celebrations, but that does not change Eid al-Fitr’s identity as an Islamic holiday observed by Muslims.