| Geyser | 1904-04-30 |
|---|---|
| King | 0000-2030 |
| Values for Old Faithful Area | 1904-04-30 |
|---|---|
| Astronomical Twilight Begin | 03:20 |
| Nautical Twilight Begin | 04:03 |
| Civil Twilight Begin | 04:43 |
| Sunrise | 05:15 |
| Sunset | 19:25 |
| Civil Twilight End | 19:57 |
| Nautical Twilight End | 20:36 |
| Astronomical Twilight End | 21:20 |
| Moon Illumination | 99.83% |