Equinox and Eid al-Fitr 2026: A Celestial Alignment

Jakarta, Indonesia is poised for a unique celestial event as the March equinox coincides closely with the anticipated celebration of Eid al-Fitr in 2026. This alignment means that during Eid festivities, the sun will be positioned directly above the equator, resulting in approximately 12 hours of daylight and 12 hours of darkness across the globe.

Understanding the Equinox

The term “equinox” originates from the Latin words meaning “equal night.” This astronomical phenomenon occurs when the Earth’s axis is perpendicular to the Sun, leading to equal durations of daylight and darkness at all locations on Earth. Equinoxes happen twice annually, in March and September. The March equinox marks the beginning of spring in the Northern Hemisphere and autumn in the Southern Hemisphere. Sunrise and Sunset Time provides detailed information on equinoxes and solstices globally.

2026 Dates and Predictions

According to Time and Date, the March equinox in Jakarta will occur on March 20, 2026, at 9:46 PM WIB (Western Indonesian Time). The prediction for Eid al-Fitr in 2026 is March 21, with the earliest sunset time expected at 5:48:13 PM WIT in Waris, Papua, and the latest at 6:49:39 PM WIT in Banda Aceh, Aceh.

Differing Eid Predictions

While many anticipate Eid al-Fitr on March 21, 2026, there are differing predictions. Muhammadiyah, a prominent Islamic organization in Indonesia, has announced that Eid will fall on Friday, March 20, 2026. This difference stems from variations in the criteria used to determine the start of the Islamic lunar month of Ramadan and, Eid al-Fitr.

Lunar Observations and MABIMS Criteria

The Meteorology, Climatology and Geophysics Agency (BMKG) reports that the height of the crescent moon and its elongation on March 19, 2026, may not meet the criteria set by MABIMS (Minister of Religion of Brunei, Indonesia, Malaysia and Singapore). MABIMS requires a hilal (crescent moon) height of 3 degrees with an elongation angle of 6.4 degrees for the sighting of the new moon to be considered valid. Even though, BMKG data indicates that the height of the new moon in Indonesia will range from 0.91 degrees in Merauke, Papua, to 3.31 degrees in Sabang, Aceh, with elongation ranging from 4.54 to 6.1 degrees. Based on this data, Ramadan is expected to last 30 days, placing Eid al-Fitr on March 21, 2026.

Impact of the Equinox on Temperature

When the equinox occurs, the sun is closest to the tropical regions around the equator, resulting in maximum solar radiation. However, the BMKG emphasizes that this phenomenon does not necessarily lead to a drastic or extreme increase in air temperature. The average maximum temperature in Indonesia typically ranges from 32-36 degrees Celsius. The equinox is a natural astronomical event and is distinct from heat waves, which can cause prolonged and significant temperature increases. There is no cause for public alarm regarding the equinox’s impact on health or the environment.

Traffic Anticipation During Eid Exodus

Coinciding with the equinox, the period from March 16-18, 2026, is predicted to be the peak of the mudik (Eid exodus) as millions of Indonesians travel to their hometowns to celebrate with family. Tempo.co reports that Jakarta is expected to be the second-largest departure point for travelers. Authorities are preparing traffic management measures, including restrictions on large vehicles and potential one-way systems, to mitigate congestion. The National Police also anticipate a second peak in homecoming traffic on March 18 and 19, with return flows occurring on March 24-25 and March 28-29.