Adha, a period of "communal enjoyment" for Muslims worldwide, has officially arrived. Here's what we've learned about the Islamic holiday.

A Nigerian Muslim woman attends Eid al-Adha prayers at an open field in Lagos, Nigeria, Friday,. A boy of the Muslim community in Romania holds his phone in a traditional belt during Eid al-Adha prayers at the Dinamo stadium in Bucharest,

The chair of the Belfast Islamic Centre says the Muslim community in Northern Ireland is growing.