REPUBLIKA.CO.ID, JAKARTA — The Single Global Hijri Calendar (KHGT) applies the principle of one day and one date for the whole world and views the entire surface of the earth as one destination. Now, Muhammadiyah officially enacted KHGT after its launch in the Convention Hall of Masjid Walidah Dahlan, Universitas 'Aisyiyah (UNISA) Yogyakarta on Wednesday (25/6/2025).
Hamim Ilyas, Chairman of the Assembly of Tarjieh and Tajdid of the Central Council of Muhammadiyah, said that the launch of KHGT was the result of an in-depth study that had been decided at the 32nd National Consultation (MUNAS) in February 2024. This decision adopts the results of Muktamar Turkey 2016 which is considered to meet Islamic sharia and is scientifically based.
“By adopting the KHGT, Muhammadiyah wants to pay off the debt of civilization. During the 14 centuries of Islamic history, there has been no globally valid and unifying Islamic calendar system. KHGT is here to realize the unity of time for Muslims around the world,” Hamim said in a press release received by Republika on Wednesday (25/6/2025) KHGT based on three main principles.
Namely, the uniformity of days and dates around the world for the start of the new moon. Second, hisab's use of astronomical calculations as a method of determining time, which allows forecasting of the dating schedule far ahead. Keytiga, the unity of matlak, is the notion that the entire surface of the earth is a single time zone for the Islamic calendar.
To support the implementation of KHGT, Majelis Tarih and Tajdid Muhammadiyah have developed three state-of-the-art falak science-based software. Among them, Hisab Muhammadiyah, a desktop application for computers and laptops. A web application that can be accessed through the official website khgt.muhammadiyah.or.id.MASA, an Android application available for smartphone users.
All three apps are available in three languages, Indonesian, Arabic and English to reach Muslims globally. Equipped with interactive maps, the application visualizes KHGT parameters accurately and is user-friendly.
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