Tonight's Moon

How this page is computed

The phase, illumination, and next-phase dates above are computed in the browser-free server from the standard synodic month (29.5306 days) measured from a known reference new moon on January 6, 2000. The math is the same that almanacs have used for a century. We deliberately avoid a third-party API call so the page renders fast and stays accurate even when external services are down.

Illumination is the cosine of the phase angle, expressed as a percentage of the visible disk. The eight-phase label rounds the age of the moon to the nearest eighth of a cycle, which matches how almost every traditional calendar names the moon. Cycle direction tells you whether the moon is growing toward full (waxing) or shrinking toward new (waning), which is the single most useful distinction for crystal practice.

Why moon phase matters in crystal work

Two reasons, both practical. First, charging by moonlight is a real thing that crystal practitioners have done for a very long time. Most water-safe stones charge fine on any clear night, but the night of the full moon is when the light is most consistent from sunset to sunrise. Second, ritual rhythm. A new moon is for setting an intention; a full moon is for charging and gratitude; a waning moon is for releasing what you do not want to carry forward. Lining your practice up with the cycle gives the work a calendar, which most beginners find more sustainable than trying to do it on willpower.

Stones that respond particularly well to moonlight charging include moonstone, selenite, clear quartz, labradorite, and rainbow moonstone. Avoid putting carnelian, amethyst, rose quartz, and fluorite in direct sunlight to charge (they fade); moonlight is always safe.