| Geyser | 1987-08-09 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1987-08-09 |
|---|---|
| Astronomical Twilight Begin | 04:21 |
| Nautical Twilight Begin | 05:06 |
| Civil Twilight Begin | 05:46 |
| Sunrise | 06:18 |
| Sunset | 20:38 |
| Civil Twilight End | 21:10 |
| Nautical Twilight End | 21:50 |
| Astronomical Twilight End | 22:35 |
| Moon Illumination | 99.94% |