| Geyser | 1978-07-12 |
|---|---|
| Blue | 1050 |
| Dark Cavern | 1100, 1300 A |
| Echinus | 1004, 1145, 1428, 1550 |
| Splutter Pot | 1040 |
| Veteran | 1200, 1415 |
| Whirligig | 1040 |
| Values for Old Faithful Area | 1978-07-12 |
|---|---|
| Astronomical Twilight Begin | 03:30 |
| Nautical Twilight Begin | 04:28 |
| Civil Twilight Begin | 05:14 |
| Sunrise | 05:50 |
| Sunset | 21:07 |
| Civil Twilight End | 21:43 |
| Nautical Twilight End | 22:29 |
| Astronomical Twilight End | 23:27 |
| Moon Illumination | 37.82% |