| Geyser | 1978-08-26 |
|---|---|
| Cistern Spring | 0910 |
| Echinus | 0831, 1054, 1207, 1433 |
| Values for Old Faithful Area | 1978-08-26 |
|---|---|
| Astronomical Twilight Begin | 04:52 |
| Nautical Twilight Begin | 05:31 |
| Civil Twilight Begin | 06:08 |
| Sunrise | 06:38 |
| Sunset | 20:11 |
| Civil Twilight End | 20:41 |
| Nautical Twilight End | 21:18 |
| Astronomical Twilight End | 21:58 |
| Moon Illumination | 42.83% |