Two full moons to occur in May 2026

In May 2026, two full moons will occur within the same calendar month. The first, known as the 'Flower Moon,' is set to peak on Friday, May 1, at 20:23 Greek time. The second full moon will take place on May 31, a phenomenon commonly referred to as a 'Blue Moon.' The term 'Flower Moon' originates from North American indigenous traditions, marking the seasonal abundance of blooms. In other cultural traditions, this May moon is also called the 'Milk Moon' or 'Corn Planting Moon.' Astronomically, these events occur when the Earth is positioned between the Sun and the Moon. While the peak occurs at a specific time, the moon will appear full and visible to the naked eye for several days. Observations are expected to be possible without specialized equipment, even in urban environments.