How often does the red moon occur?

A red moon, often referred to as a "blood moon," typically occurs during a total lunar eclipse when the Earth passes directly between the sun and the moon, casting a shadow that results in a reddish hue. These events are relatively rare, happening about once every one to three years. However, multiple total lunar eclipses can occur within a short time span, so the frequency can vary. Overall, while they are not extremely common, they are also not overly rare.