| Geyser | 1984-08-10 |
|---|---|
| Echinus | 1350 |
| Values for Old Faithful Area | 1984-08-10 |
|---|---|
| Astronomical Twilight Begin | 04:24 |
| Nautical Twilight Begin | 05:09 |
| Civil Twilight Begin | 05:48 |
| Sunrise | 06:20 |
| Sunset | 20:36 |
| Civil Twilight End | 21:08 |
| Nautical Twilight End | 21:47 |
| Astronomical Twilight End | 22:32 |
| Moon Illumination | 98.1% |