The Leo King

A half-lit Moon can belong to two different parts of the lunar month.

In Deep Astrology covering October 13–19, 2026, David Palmer names the first-quarter Sun–Moon square at 57:04–57:41. Here is a useful way to recognize the phase before interpreting it.

First quarter follows New Moon: the illuminated portion we see is growing.
Last quarter follows Full Moon: that portion is shrinking.

Both look approximately half lit. Both have a smaller Sun–Moon longitude separation of 90°. The direction around the cycle makes the difference.

For the exact phase definition, subtract the Sun's apparent geocentric ecliptic longitude from the Moon's, then bring the result into 0–360°:
• 90° = first quarter
• 270° = last quarter

“Quarter” names the stage of the cycle, even though roughly half the visible disk is illuminated.

Next time you mark a Sun–Moon square in your study notes, add first or last quarter and waxing or waning. You'll know where that square belongs in the larger sequence.

Watch David's first-quarter discussion in the full episode on High Vibe TV:
https://www.highvibe.tv/programs/deep-astrology-weekly-horoscope-october-13-19-2026-pluto-stations-direct-mars-trine-saturn-venus-square-pluto-yod-1208a6
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Phase mechanics and the note-taking exercise are our educational extension, not a quote from David or a claim about the exact sky at posting time.
Primary definition: https://aa.usno.navy.mil/faq/moon_phases

AI-created lunar landscape, not a dated observation or precision phase diagram.

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