Millions of Muslims across the world are celebrating the first day of the Eid al-Fitr holiday, which marks the end of the month-long fast of Ramadan.

Families wore their finest clothes as they headed to mosques early in the morning to observe traditional Eid prayers but the mood was dark for millions of people affected by the Syrian civil war, the Gaza war and the Islamist militant advance in Iraq.

Muslims in Indonesia, Malaysia, the Philippines, across the Middle East, Europe and the US are celebrating Eid today  but millions in India, Pakistan and Morocco are still fasting and will likely celebrate tomorrow. Muslims use a lunar calendar and a moon-sighting methodology that can lead to the fast ending on different days.

People ride on bumper cars during an Eid celebration in Burgess Park in Camberwell, London
People ride on bumper cars during an Eid celebration in Burgess Park in Camberwell, LondonAFP
Somali children play after attending Eid al-Fitr prayers in Mogadishu
Somali children play after attending Eid al-Fitr prayers in MogadishuReuters
People travel on an overcrowded passenger ferry on the Buriganga River in Dhaka as they head home from the capital for Eid
People travel on an overcrowded passenger ferry on the Buriganga River in Dhaka as they head home from the capital for EidAFP
An Indonesian Muslim man uses a telescope to try to spot the new crescent moon that determines the end of Ramadan, at Condro Dipo Hill in Gresik, Java
An Indonesian Muslim man uses a telescope to try to spot the new crescent moon that determines the end of Ramadan, at Condro Dipo Hill in Gresik, JavaAFP
Indonesian Muslims perform a payer to mark Eid Al-Fitr, the end of Ramadan, at Parangkusumo beach in Yogyakarta, Java
Indonesian Muslims perform a payer to mark Eid Al-Fitr, the end of Ramadan, at Parangkusumo beach in Yogyakarta, JavaGetty
A boy watches a remote-controlled camera fly above during a prayer session on Eid al-Fitr at Sunda Kelapa port in Jakarta, Indonesia
A boy watches a remote-controlled camera fly above during a prayer session on Eid al-Fitr at Sunda Kelapa port in Jakarta, IndonesiaReuters
Indonesian Muslims travel on a small boat between ships on their way to attend prayers on Eid al-Fitr at Sunda Kelapa port in Jakarta
Indonesian Muslims travel on a small boat between ships on their way to attend prayers on Eid al-Fitr at Sunda Kelapa port in JakartaReuters
Muslim worshippers take part in a prayer in front of the Dome of the Rock in Jerusalem's Old City
Muslim worshippers take part in a prayer in front of the Dome of the Rock in Jerusalem's Old CityReuters
Palestinians pray at the heavily damaged Al-Faruq mosque, destroyed a week ago by an Israeli air strike on Rafah in the southern Gaza Strip
Palestinians pray at the heavily damaged Al-Faruq mosque, destroyed a week ago by an Israeli air strike on Rafah in the southern Gaza StripAFP
Kurdish Peshmerga forces have lunch with provincial Governor Najm al-Din Karim in the northern Iraqi city of Kirkuk
Kurdish Peshmerga forces have lunch with provincial Governor Najm al-Din Karim in the northern Iraqi city of KirkukGetty
Syria's President Bashar al-Assad attends Eid al-Fitr prayers at al-Khair mosque in Damascus
Syria's President Bashar al-Assad attends Eid al-Fitr prayers at al-Khair mosque in DamascusAFP
Bosnian Muslim men hug after prayers at the mosque during Eid al-Fitr in the village of Zeljezno Polje
Bosnian Muslim men hug after prayers at the mosque during Eid al-Fitr in the village of Zeljezno PoljeReuters
Young Kosovo Muslims take part in a prayer during a celebration of Eid al-Fitr at the Sulltan Mehmet Fatih mosque in Pristina
Young Kosovo Muslims take part in a prayer during a celebration of Eid al-Fitr at the Sulltan Mehmet Fatih mosque in PristinaAFP
Muslim leaders look to the west for the new moon at Seapoint in Cape Town, South Africa
Muslim leaders look to the west for the new moon at Seapoint in Cape Town, South AfricaAFP
A Malaysian Muslim man offers Eid al-Fitr prayers with his son at the national mosque in Kuala Lumpur, Malaysia
A Malaysian Muslim man offers Eid al-Fitr prayers with his son at the national mosque in Kuala Lumpur, MalaysiaAFP
A man kisses his son as his family waits for morning prayers to begin, during the celebration of Eid al-Fitr at a park in Manila, the Philippines
A man kisses his son as his family waits for morning prayers to begin, during the celebration of Eid al-Fitr at a park in Manila, the PhilippinesReuters
A man discharges a gun to celebrate the first Ramadan of the new Emir Muhammadu Sanusi II in Kano State, Nigeria
A man discharges a gun to celebrate the first Ramadan of the new Emir Muhammadu Sanusi II in Kano State, NigeriaReuters
A young boy is pictured as French Muslims pray in a hall of the Parc Chanot Exhibition Centre in Marseille
A young boy is pictured as French Muslims pray in a hall of the Parc Chanot Exhibition Centre in MarseilleAFP