| Global Event: | Partial Lunar Eclipse |
|---|---|
| Local Type: | Partial Lunar Eclipse in Boulder, Colorado |
| Began: | Tue, Sep 17, 2024 at 7:05 pm |
| Maximum: | Tue, Sep 17, 2024 at 8:44 pm 0.085 Magnitude |
| Ended: | Tue, Sep 17, 2024 at 10:47 pm |
| Duration: | 3 hours, 42 minutes | All times shown on this page are local time. |
September 17, 2024 — Partial Lunar Eclipse — Boulder
The animation shows what the eclipse approximately looked like in Boulder. Stages and times of the eclipse are outlined below. All times were local time (MDT) for Boulder.
| Time | Phase | Event | Direction | Altitude |
|---|---|---|---|---|
| 6:41 pm Tue, Sep 17 | Not directly visible | Penumbral Eclipse begins Below horizon |  90° | -5.3° |
| 7:05 pm Tue, Sep 17 | Rising | Moonrise Rising | 94° | -0.2° |
| 8:12 pm Tue, Sep 17 | Partial Eclipse begins Partial moon eclipse starts - moon is getting red. | 104° | 11.9° | |
| 8:44 pm Tue, Sep 17 | Maximum Eclipse Moon is closest to the center of the shadow. | 109° | 17.5° | |
| 9:15 pm Tue, Sep 17 | Partial Eclipse ends Partial moon eclipse ends. | 115° | 23.0° | |
| 10:47 pm Tue, Sep 17 | Penumbral Eclipse ends The Earth's penumbra ends. | 135° | 37.3° |
How to use altitude & direction to find in the sky
The curvature of the shadow's path and the apparent rotation of the Moon's disk is due to the Earth's rotation.
During this partial lunar eclipse, the Earth's shadow covered only parts of the Moon, as seen from Boulder. There were no other locations on Earth where the Moon appeared completely covered during this event. The Earth's shadow covered only a small portion of the Moon.
Cloud Coverage (Sep 17)
In the past, this day was cloudy 29% of the time (since 2000).
Lunar Eclipses
- When Is the Next Lunar Eclipse?
- Total Lunar Eclipse
- Why Does the Moon Turn Red?
- Partial Lunar Eclipse
- Penumbral Lunar Eclipse
- Can I See a Lunar Eclipse?
- Blood Moon - Total Lunar Eclipse
- Eclipse Seasons
- What Is a Tetrad?
- Magnitude of Eclipses
- Accuracy of Our Eclipse Calculations
- Why Two Dates for a Lunar Eclipse?
Eclipses and Transits Visible in Boulder
| Eclipse Visibility From Boulder | Visibility Worldwide | ||
|---|---|---|---|
| Mar 13–14, 2025 Total Lunar Eclipse | Total Lunar Eclipse |  | |
| Mar 3, 2026 Total Lunar Eclipse | Total Lunar Eclipse |  | |
| Aug 27–28, 2026 Partial Lunar Eclipse | Partial Lunar Eclipse |  | |
| Feb 20, 2027 Penumbral Lunar Eclipse | Penumbral Lunar Eclipse |  | |
| Aug 16–17, 2027 Penumbral Lunar Eclipse | Penumbral Lunar Eclipse |  | Note: Click on the date link for details in Boulder, or the path map image for global details. |