| Geyser | 1978-07-29 |
|---|---|
| Echinus | 1100, 1216, 1606 |
| Values for Old Faithful Area | 1978-07-29 |
|---|---|
| Astronomical Twilight Begin | 04:01 |
| Nautical Twilight Begin | 04:50 |
| Civil Twilight Begin | 05:33 |
| Sunrise | 06:06 |
| Sunset | 20:52 |
| Civil Twilight End | 21:26 |
| Nautical Twilight End | 22:08 |
| Astronomical Twilight End | 22:58 |
| Moon Illumination | 27.75% |