🇮🇩 Indonesia
Idul Adha
Next observed on Monday, 17 May 2027.
When is Idul Adha in 2027?
Monday, 17 May 2027
Counting down to Idul Adha
What Idul Adha marks
Eid al-Adha is the second of the two main festivals in Islam, alongside Eid al-Fitr. It falls on the 10th of Dhu'l-Hijja, the twelfth and final month of the Islamic calendar. Celebrations and observances are generally carried forward to the three following days, known as the Tashreeq days.
Background summarised from Wikipedia — Islamic holiday, available under CC BY-SA.
Why this date says “tentative”
Idul Adha follows a lunar or observation-based calendar, so its Gregorian date cannot be fixed far ahead. The day depends on a moon sighting or an official announcement, which is why calendar feeds — including the one in Google Calendar, where most people first see the label — publish an estimate marked (tentative). It is not an error: it is the calendar being honest that the date may still move by a day or two, and neighbouring countries can observe it on different days. Read the full explanation →
Frequently asked
When is Idul Adha in 2027?
Idul Adha falls on Monday, 17 May 2027 in Indonesia.
What day of the week is Idul Adha 2027?
Idul Adha 2027 falls on a Monday, 17 May 2027.
Where is Idul Adha observed?
Observed nationally in Indonesia.
What does Idul Adha celebrate?
Islamic holiday. Eid al-Adha is the second of the two main festivals in Islam, alongside Eid al-Fitr. It falls on the 10th of Dhu'l-Hijja, the twelfth and final month of the Islamic calendar. Celebrations and observances are generally carried forward to the three following days, known as the Tashreeq days.
What does “(tentative)” mean for Idul Adha?
It means the date is an estimate rather than a confirmation. Idul Adha follows a lunar or observation-based reckoning, so the exact day depends on a moon sighting or an official announcement that has not happened yet. Expect it to move by up to a day or two, and treat it as a strong estimate rather than a guarantee.
Is the Idul Adha 2027 date confirmed?
Not yet. The date shown is provisional and is usually confirmed by the relevant authority days to a few weeks beforehand. Check an official public-holiday list before booking anything that cannot move.