The Blue Moon in 2023 appeared on August 30th. It was the second full moon in August 2023, which is why it is called a Blue Moon. This event was also a supermoon, meaning the moon was closer to the Earth and appeared slightly larger and brighter than usual. The exact moment of the full moon was at 9:36 p.m. EDT on August 30 (03:36 UTC on August 31), and the moon rose just after sunset at 7:10 p.m. EDT on the same day.