| Global Event: | Penumbral Lunar Eclipse |
|---|---|
| Local Type: | Penumbral Lunar Eclipse in Adak, Alaska |
| Begins: | Mon, Aug 16, 2027 at 9:54 pm |
| Maximum: | Mon, Aug 16, 2027 at 10:13 pm -0.526 Magnitude |
| Ends: | Tue, Aug 17, 2027 at 12:03 am |
| Duration: | 2 hours, 9 minutes | All times shown on this page are local time. |
August 16–17, 2027 — Penumbral Lunar Eclipse — Adak
The animation shows what the eclipse approximately looks like in Adak. Stages and times of the eclipse are outlined below. All times are local time (HDT) for Adak.
| Time | Phase | Event | Direction | Altitude |
|---|---|---|---|---|
| 8:24 pm Mon, Aug 16 | Not directly visible | Penumbral Eclipse begins Below horizon |  93° | -14.1° |
| 9:54 pm Mon, Aug 16 | Rising | Moonrise Rising, but the combination of a very low moon and the total eclipse phase will make the moon so dim that it will be extremely difficult to view until moon gets higher in the sky or the total phase ends. | 110° | -0.2° |
| 10:13 pm Mon, Aug 16 | Maximum Eclipse Moon is closest to the center of the shadow. Moon close to horizon, so make sure you have free sight to East-southeast. Additionally, the eclipsed moon combined with dimming near horizon might make the Moon very hard or impossible to see. | 114° | 2.2° | |
| 12:03 am Tue, Aug 17 | Penumbral Eclipse ends The Earth's penumbra ends. | 136° | 15.7° |
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 penumbral lunar eclipse, the Earth's main shadow does not cover the Moon. As the Earth's shadow (umbra) misses the Moon during a penumbral lunar eclipse, there are no other locations on Earth where the Moon appears partially or totally eclipsed during this event. A penumbral lunar eclipse can be a bit hard to see as the shadowed part is only a little bit fainter than the rest of the Moon.
Cloud Coverage (Aug 16–17)
In the past, this day was cloudy 92% 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 Adak
| Eclipse Visibility From Adak | Visibility Worldwide | ||
|---|---|---|---|
| Mar 13–14, 2025 Total Lunar Eclipse | Total Lunar Eclipse |  | |
| Sep 7, 2025 Partial Lunar Eclipse | Total Lunar Eclipse |  | |
| Mar 2–3, 2026 Total Lunar Eclipse | Total Lunar Eclipse |  | |
| Aug 12, 2026 Partial Solar Eclipse | Total Solar Eclipse |  | |
| Aug 27, 2026 Penumbral Lunar Eclipse | Partial Lunar Eclipse |  | Note: Click on the date link for details in Adak, or the path map image for global details. |
Next total solar eclipse visible in Adak