| Geyser | 1978-07-09 |
|---|---|
| Dark Cavern | 1315 |
| Echinus | 1050, 1205, 1607 |
| Splutter Pot | 1300 |
| Whirligig | 1300 |
| Values for Old Faithful Area | 1978-07-09 |
|---|---|
| Astronomical Twilight Begin | 03:26 |
| Nautical Twilight Begin | 04:24 |
| Civil Twilight Begin | 05:11 |
| Sunrise | 05:47 |
| Sunset | 21:09 |
| Civil Twilight End | 21:45 |
| Nautical Twilight End | 22:32 |
| Astronomical Twilight End | 23:30 |
| Moon Illumination | 12.82% |