Astronomy
Moon Phases for December 2025
Primary lunar phases are calculated for UTC. Local dates can shift near midnight.
| Phase | UTC date | UTC time | Source |
|---|---|---|---|
| Full Moon | 2025-12-04 | 23:14 | astronomy-engine@2.1.19 |
| Last Quarter | 2025-12-11 | 20:52 | astronomy-engine@2.1.19 |
| New Moon | 2025-12-20 | 01:44 | astronomy-engine@2.1.19 |
| First Quarter | 2025-12-27 | 19:10 | astronomy-engine@2.1.19 |