Prediction 1 Syawal 1447 H: Lebaran 2026 Potentially Fall on Saturday 21 March
JAKARTA - Towards the end of the holy month of Ramadan, questions about when Eid al-Fitr 2026 will begin to emerge. The Falakiyah Institution of the General Board of Nahdlatul Ulama (LF PBNU) has just released falakiyah data related to determining 1 Syawal 1447 H which falls in March 2026.
Based on data released as reported by nu.or.id, the crescent moon at the end of Ramadan or Thursday Kliwon, March 19, 2026, shows a position that is already above the horizon, but it is predicted that it has not met the minimum criteria to be seen (imkanur rukyah).
Analysis of PBNU LF Hilal Data: Potential Istikmal
Based on the calculation of the contemporary falak tahqiqi tadqiki ashri method typical of Nahdlatul Ulama, the following is the detailed data of the crescent in several regions:
Maximum Hilal Height: Occurred in Sabang City, Aceh, with a mar'ie height of 2 degrees 53 minutes and haqiqy elongation of 6 degrees 09 minutes. Minimum Hilal Height: Occurred in Merauke, South Papua, with a height of 0 degrees 49 minutes and an elongation of 4 degrees 36 minutes. Jakarta Point (PBNU Building): The hilal height is at 1 degree 43 minutes 54 seconds with a hilal length of about 10 minutes 51 seconds.The condition of the crescent moon which is still below the MABIMS criteria (minimum height of 3 degrees and elongation of 6.4 degrees) opens up the potential for the month of Ramadan to be completed into 30 days (istikmal). If so, then Eid al-Fitr 1 Syawal 1447 H will likely fall on Saturday, March 21, 2026.
BMKG Forecast: Conjunction Occurs Before Sunset
In line with the LF PBNU, the Meteorology, Climatology, and Geophysics Agency (BMKG) also released information on the prediction of the crescent moon. BMKG noted that the conjunction (ijtimak) will occur on Thursday, March 19, 2026, at 08.23 WIB.
The following are the hilal parameters according to BMKG when the Sun sets on March 19, 2026:
Hilal height: ranging from 0.91 degrees (Merauke) to 3.13 degrees (Sabang). Elongation: ranging from 4.54 degrees (Waris, Papua) to 6.1 degrees (Banda Aceh). Moon age: between 7.41 hours to 10.44 hours. Hilal length: ranging from 5.6 minutes to 15.66 minutes above the horizon.Waiting for the Isbat Trial Results
Although the calculation data is available, the public is asked to wait for the official results. The certainty of when Lebaran 2026 will still refer to:
Rukyatul Hilal results: Field observations conducted by the LF PBNU team at various points in Indonesia on Thursday (19/3/2026) afternoon.For Muslims, this moment is a reminder to maximize worship in the last days of Ramadan while waiting for the official announcement of the day of victory.