| Geyser | 1977-10-27 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1977-10-27 |
|---|---|
| Astronomical Twilight Begin | 06:16 |
| Nautical Twilight Begin | 06:50 |
| Civil Twilight Begin | 07:24 |
| Sunrise | 07:54 |
| Sunset | 18:20 |
| Civil Twilight End | 18:49 |
| Nautical Twilight End | 19:24 |
| Astronomical Twilight End | 19:57 |
| Moon Illumination | 99.93% |