You’ve heard of people mowing by the phases of the moon? Yeah, that’s a thing. Some gardeners swear the moon affects sap flow. I say: mow when you have time and it’s not raining.
If you want to be extra fancy, mow during a waxing moon (the one that’s getting bigger) for faster growth, or a waning moon (getting smaller) for slower growth. Or just ignore it and blame the slugs.
Honestly, life’s too short for lunar lawncare. Unless you’re a druid. In which case, go for it.