Moon calendar
Moon phases in September 2028
In September 2028 the full moon falls on 3 September at 23:49 UTC, and the new moon on 18 September. Every night of the month with its phase and how much of the Moon is lit, computed from the same engine the rest of the site runs on.
The exact moments
- Full Moon
- Last Quarter
- New Moon
- First Quarter
Times are UTC. A phase is a moment, not a night: the Moon is “full” at one instant, and looks full for a day either side of it. The live calendar works these out for your own clock and, if you let it, your own horizon.
Every night in September 2028
| Date | Phase | Lit |
|---|---|---|
| Fri 1 | Waxing Gibbous | 92% |
| Sat 2 | Waxing Gibbous | 96% |
| Sun 3 | Full Moon Full Moon 23:49 UTC | 99% |
| Mon 4 | Full Moon | 100% |
| Tue 5 | Full Moon | 99% |
| Wed 6 | Waning Gibbous | 96% |
| Thu 7 | Waning Gibbous | 92% |
| Fri 8 | Waning Gibbous | 86% |
| Sat 9 | Waning Gibbous | 79% |
| Sun 10 | Waning Gibbous | 70% |
| Mon 11 | Waning Gibbous | 61% |
| Tue 12 | Last Quarter Last Quarter 00:47 UTC | 50% |
| Wed 13 | Last Quarter | 40% |
| Thu 14 | Waning Crescent | 29% |
| Fri 15 | Waning Crescent | 20% |
| Sat 16 | Waning Crescent | 11% |
| Sun 17 | Waning Crescent | 5% |
| Mon 18 | New Moon New Moon 18:25 UTC | 1% |
| Tue 19 | New Moon | 0% |
| Wed 20 | Waxing Crescent | 3% |
| Thu 21 | Waxing Crescent | 8% |
| Fri 22 | Waxing Crescent | 15% |
| Sat 23 | Waxing Crescent | 24% |
| Sun 24 | Waxing Crescent | 34% |
| Mon 25 | First Quarter First Quarter 13:11 UTC | 44% |
| Tue 26 | First Quarter | 55% |
| Wed 27 | Waxing Gibbous | 65% |
| Thu 28 | Waxing Gibbous | 74% |
| Fri 29 | Waxing Gibbous | 82% |
| Sat 30 | Waxing Gibbous | 88% |
Illumination is taken at 00:00 UTC on each date. It changes by a percent or two over a day, which is why the site’s own nightly card computes it for the evening you are actually standing in.
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