Super Moon July 2024. July's supermoon is appearing full for up to three days,. A supermoon is when a full moon takes place at the same time that the moon is at its closest point to earth on its elliptical orbit (known as perigee).
The moon will appear full for about three days, from monday evening. The july full moon, also known as the buck moon, occurs on july 21, at 6:17 a.m.