| Geyser | 1978-03-28 |
|---|---|
| Cistern Spring | 1815 |
| Steamboat | 1030, 1800 |
| Values for Old Faithful Area | 1978-03-28 |
|---|---|
| Astronomical Twilight Begin | 04:31 |
| Nautical Twilight Begin | 05:07 |
| Civil Twilight Begin | 05:42 |
| Sunrise | 06:11 |
| Sunset | 18:45 |
| Civil Twilight End | 19:14 |
| Nautical Twilight End | 19:49 |
| Astronomical Twilight End | 20:24 |
| Moon Illumination | 84.68% |