| Geyser | 1939-08-06 |
|---|---|
| King | 0000-2359 |
| Values for Old Faithful Area | 1939-08-06 |
|---|---|
| Astronomical Twilight Begin | 03:15 |
| Nautical Twilight Begin | 04:01 |
| Civil Twilight Begin | 04:42 |
| Sunrise | 05:15 |
| Sunset | 19:43 |
| Civil Twilight End | 20:15 |
| Nautical Twilight End | 20:56 |
| Astronomical Twilight End | 21:43 |
| Moon Illumination | 70.37% |