| Geyser | 1935-07-15 |
|---|---|
| King | 1645 |
| Values for Old Faithful Area | 1935-07-15 |
|---|---|
| Astronomical Twilight Begin | 02:34 |
| Nautical Twilight Begin | 03:30 |
| Civil Twilight Begin | 04:16 |
| Sunrise | 04:52 |
| Sunset | 20:06 |
| Civil Twilight End | 20:41 |
| Nautical Twilight End | 21:27 |
| Astronomical Twilight End | 22:23 |
| Moon Illumination | 98.81% |