| Geyser | 1984-08-12 |
|---|---|
| Echinus | 1119 |
| Values for Old Faithful Area | 1984-08-12 |
|---|---|
| Astronomical Twilight Begin | 04:28 |
| Nautical Twilight Begin | 05:12 |
| Civil Twilight Begin | 05:51 |
| Sunrise | 06:23 |
| Sunset | 20:33 |
| Civil Twilight End | 21:04 |
| Nautical Twilight End | 21:44 |
| Astronomical Twilight End | 22:27 |
| Moon Illumination | 99.66% |