| Geyser | 1978-07-08 |
|---|---|
| Echinus | 0919, 1033, 1147, 1422, 1538 |
| Emerald Spring | 1000, 1500 |
| Values for Old Faithful Area | 1978-07-08 |
|---|---|
| Astronomical Twilight Begin | 03:24 |
| Nautical Twilight Begin | 04:23 |
| Civil Twilight Begin | 05:10 |
| Sunrise | 05:46 |
| Sunset | 21:09 |
| Civil Twilight End | 21:45 |
| Nautical Twilight End | 22:32 |
| Astronomical Twilight End | 23:32 |
| Moon Illumination | 7.12% |