What's actually happening
A Last Quarter Moon occurs when the Moon is ninety degrees behind the Sun in the zodiac — a waning square. The Moon is half-lit, now diminishing rather than growing.
For a Last Quarter in Gemini, the Moon is in Gemini while the Sun is in Virgo. The tension is between the agile, associative quality of the Moon and the precise, discriminating quality of the Sun.
What the tradition makes of it
The Last Quarter is a "crisis of consciousness" — the recognition of what was genuinely learned in the cycle and what must be let go. Gemini brings mental activity and the movement of ideas to that moment. The relevant material for release is cognitive: the plans that were never executed, the conversations that were started but never completed, the information gathered that is now either integrated or useless.
The Virgo Sun asks for precision in the sorting: what is genuinely useful going forward and what is merely accumulation?
How to actually use it
Clear the mental landscape of this cycle. Finish the conversations that are open, archive or discard the plans that are not being pursued, and allow the proliferation of ideas from the preceding weeks to settle into what is actually relevant to the next beginning.
When in doubt
Ask what from the mental accumulation of this cycle you are actually going to use — and what you are keeping only because you have not decided to stop keeping it.