JAKARTA - The government through the Ministry of Religion of the Republic of Indonesia officially determined that Eid al-Adha 1447 Hijriah fell on Wednesday, May 27, 2026. This decision also ensures that this year's Eid al-Adha will take place simultaneously between the government and Muhammadiyah, after Muhammadiyah previously determined the same date through the global hisab method.
The determination was announced by the Minister of Religion of the Republic of Indonesia, Nasaruddin Umar, after the isbat session to determine 1 Zulhijjah 1447 H which was held in Jakarta, Sunday, May 17, 2026.
"It was agreed that the date of 1 Zulhijjah 1447 Hijri fell on Monday, May 18, 2026 AD and thus Eid al-Adha on 10 Zulhijjah 1447 Hijri fell on Wednesday, May 27, 2026," said Nasaruddin Umar.
The decision was made based on the results of rukyatul hilal from a number of regions in Indonesia which were then combined with astronomical calculations.
Previously, Muhammadiyah had previously determined that Iduladha 1447 H fell on Wednesday, May 27, 2026. The determination was based on the global astronomical calculation method used in the Single Global Hijri Calendar (KHGT) system.
In his statement, Muhammadiyah determined that 1 Zulhijjah 1447 H fell on Monday, May 18, 2026 based on the Global Calendar Parameter (PKG) which is the basis for determining the beginning of the Hijri month internationally.
The PKG system is designed to unify the Hijri calendar globally with the principle of international visibility of the crescent moon, not based on the boundaries of certain countries.
Astronomically, the ijtimak or conjunction of the Sun and Moon before Zulhijjah 1447 H occurred on Saturday, May 16, 2026 at 20.01.02 UTC. However, at the time the Sun sets on the same day, there is no region in the world that meets the PKG criteria.
The main parameter in the form of the Moon's height of at least 5 degrees and an elongation of at least 8 degrees before 24.00 UTC has not been met. Meanwhile, the second parameter also does not meet the requirements because no area on the American mainland is found to meet the astronomical conditions after 24.00 UTC.
On this basis, the beginning of Zulhijjah 1447 H cannot be determined on May 17, 2026 and is postponed to May 18, 2026. From the results of the calculation, Eid al-Adha was then determined to fall on Wednesday, May 27, 2026.
The uniformity of the determination of Eid al-Adha this year is considered an important momentum in strengthening the unity of Muslims in Indonesia, especially in the implementation of worship and celebration of religious holidays together.
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