Blue moon phenomenon observed across Indonesia

The natural phenomenon of a blue moon was observed in Gampong Jawa, Banda Aceh, Aceh. A blue moon refers to the second full moon in a calendar month, which is astronomically expected to occur once every one to three years and is forecast to next occur on 31 December 2028.

The blue moon phenomenon was visible in the skies over Jakarta. A blue moon is the second full moon within a single calendar month, with astronomical occurrences estimated every one to three years, with the next expected on 31 December 2028.

The blue moon phenomenon was seen at Balikukup Island, Berau, East Kalimantan. According to BRIN, a blue moon is the term for the second full moon in a calendar month; the first occurred on 1 May 2026, and the second on 31 May 2026.

The blue moon phenomenon was visible in Jakarta’s skies. A blue moon is the second full moon in a calendar month, astronomically predicted to happen once every one to three years, with the next occurrence forecast for 31 December 2028.