Astrological timing can matter a lot in spellwork.
Think of is planting a garden without checking the weather. You might plant in perfect conditions. You might plant in scorching heat, hard dry soil, or right before a torrential downpour. Same seeds, same intention, completely different conditions.
That is astrology and spellwork. The moon phase, planetary days and hours, aspects, retrogrades, the condition of the moon, personal astrology, and then the actual physical environment around you.
Weather, storms, temperature, noise, privacy, EMF, geomagnetic activity, KP index, Schumann resonance and other factors can all affect the conditions you’re working in. Then add your own condition on top of that. Tired, angry, focused, sick, emotionally charged, distracted, calm. It all becomes part of the operation.
This gets complicated fast, so people ignore most of it and try to overpower the spell. More ingredients, more correspondences, stronger emotional charge, blood or other bioenergetic anchors, longer rituals, more repetition. More force doesn’t always fix bad conditions. Sometimes it just adds more noise.
Good timing should make the spell easier to carry. Like planting in soft ground on an overcast spring day with a light drizzle instead of trying to force the same garden into dry ground under the middle of the summer sun.
It doesn’t guarantee success. It just means you’re not fighting the conditions more than you have to.
When I initially designed the system I use, I built it to address these issues and to facilitate those calculations. I consider them very important.