What a phase tells you about the moon

The moon reflects sunlight. As it orbits, we see a changing portion of its illuminated half from Earth, producing the familiar phases. The cycle from one new moon to the next lasts about 29.5 days on average. A phase describes the relationship between the sun, Earth and moon; it is not a change in which the moon begins to make its own light.

Time and location describe different things

Displayed times use Europe/Amsterdam unless a value explicitly says otherwise. A phase occurs at the same astronomical moment worldwide, although local clock times differ. A phase chart does not automatically show whether the moon is above your local horizon or visible through cloud. Local conditions and moonrise and moonset times matter when observing it.

Use the calendar in a way that suits you

You might follow the phases out of curiosity, for photography or as a recurring occasion to make notes. If you use the moon symbolically, choose your own suitable practice, such as looking ahead or completing something. The calculations do not demonstrate an astrological influence on relationships, health or financial outcomes. Our methodology explains how the values are calculated and which source comparison was performed.