Nature calendar
Moon Calendar · September 2025
Daily moon phases, illumination, and key lunar dates.
Daily calendar data
First Quarter57%View → First Quarter67%View → Waxing Gibbous77%View → Waxing Gibbous85%View → Waxing Gibbous92%View → Full Moon97%View → Full Moon99%View → Full MoonFullView → Full Moon98%View → Waning Gibbous94%View → Waning Gibbous88%View → Waning Gibbous81%View → Waning Gibbous72%View → Last Quarter62%View → Last QuarterLast QtrView → Last Quarter41%View → Waning Crescent30%View → Waning Crescent21%View → Waning Crescent13%View → Waning Crescent7%View → New Moon2%View → New MoonNewView → New MoonNewView → New Moon3%View → Waxing Crescent7%View → Waxing Crescent13%View → Waxing Crescent21%View → Waxing Crescent31%View → First Quarter41%View → First QuarterFirst QtrView →September lunar highlights
Full MoonSep 8
Last QuarterSep 15
New MoonSep 22
New MoonSep 23
First QuarterSep 30
Source & method: moon deterministic calculation, algorithm 1.0.
About this calendar
A clearer way to see moon.
Follow the lunar cycle through a calm monthly visual. MixCalendar keeps the underlying time data separate from the visual layout, so the same calendar can grow into new formats without changing its meaning.
Good to know
Can I share this calendar?
Yes. Generate a share poster, copy a clean link, or download the complete current calendar view.
Does it work on mobile?
Yes. Every Phase 1 calendar is designed mobile-first and works without an account.