NU and Government Differ, Here’s the Complete Schedule for Tasu'a and Ashura Fasting in 2026
As Muharram 1448 H begins, Muslims are encouraged to do the sunnah fasts of Tasu'a (9 Muharram) and Ashura (10 Muharram). In 2026, there’s a difference in determining the start of the month between the Government and Muhammadiyah on one side, and Nahdlatul Ulama (NU) on the other.
Based on the Indonesian Hijri Calendar from the Ministry of Religious Affairs, 1 Muharram falls on Tuesday, June 16, 2026, so: Tasu'a fasting is on Wednesday, June 24, 2026; Ashura fasting is on Thursday, June 25, 2026. This schedule aligns with Muhammadiyah.
Meanwhile, LF PBNU has set 1 Muharram on Wednesday, June 17, 2026, because the crescent moon wasn’t sighted. So, NU followers observe: Tasu'a fasting on Thursday, June 25, 2026; Ashura fasting on Friday, June 26, 2026.
This difference comes from the methods: the Ministry combines astronomical calculations and moon sighting, Muhammadiyah uses pure astronomical calculation, and NU sticks to actual moon sighting. Muslims can follow whichever guideline they believe in.
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