| Geyser | 1978-09-28 |
|---|---|
| Constant | 1040, 1620 |
| Dark Cavern | 1035, 1405 |
| Echinus | 0931 |
| Green Dragon Spring | 1200 |
| Palpitator Spring | 1200 |
| Whirligig | 1405 |
| Yellow Funnel Spring | 1200 |
| Values for Old Faithful Area | 1978-09-28 |
|---|---|
| Astronomical Twilight Begin | 05:40 |
| Nautical Twilight Begin | 06:14 |
| Civil Twilight Begin | 06:48 |
| Sunrise | 07:17 |
| Sunset | 19:10 |
| Civil Twilight End | 19:39 |
| Nautical Twilight End | 20:13 |
| Astronomical Twilight End | 20:47 |
| Moon Illumination | 15.34% |