What's actually happening
A Full Moon happens when the Moon stands opposite the Sun from Earth's point of view. The lunar face is fully illuminated. A Full Moon in Aquarius means the Moon is in Aquarius while the Sun is in Leo — the axis of the collective and the individual, the group and the self.
The geometry is one of maximum contrast between personal creative expression and shared collective purpose.
What the tradition makes of it
Full Moons are culmination points. What was seeded at the New Moon has enough light on it to be seen. Aquarius adds a quality of social and collective clarity to the culmination: the relationship between individual contribution and collective benefit is fully illuminated, and the places where personal expression has been serving the group and the places where it has been serving only the self become visible.
The Leo Sun wants recognition and the right to be fully seen. The Aquarius Moon asks what the visibility is in service of. The tension between them clarifies whether personal ambition and collective purpose are aligned or in conflict.
How to actually use it
Assess the relationship between personal work and collective contribution honestly. This is good weather for recognizing where individual effort has been genuinely serving the broader community and for acknowledging where it has been nominally collective but actually personal.
When in doubt
Ask whether the work you are doing is genuinely in service of something beyond yourself — and if it is, whether that is visible to the people it is meant to serve.