| Geyser | 1978-07-24 |
|---|---|
| Dark Cavern | 1040 |
| Echinus | 0910, 1035, 1151, 1237, 1437 |
| Guardian | 1415 |
| Little Whirligig | 1415, 1415 |
| Palpitator Spring | 1200 |
| Veteran | 0925 |
| Whirligig | 0850, 1045, 1400, 1410 |
| Values for Old Faithful Area | 1978-07-24 |
|---|---|
| Astronomical Twilight Begin | 03:51 |
| Nautical Twilight Begin | 04:43 |
| Civil Twilight Begin | 05:27 |
| Sunrise | 06:01 |
| Sunset | 20:58 |
| Civil Twilight End | 21:32 |
| Nautical Twilight End | 22:15 |
| Astronomical Twilight End | 23:07 |
| Moon Illumination | 77.37% |