| Geyser | 1949-08-27 |
|---|---|
| Ebony | 1810 |
| Values for Old Faithful Area | 1949-08-27 |
|---|---|
| Astronomical Twilight Begin | 03:53 |
| Nautical Twilight Begin | 04:33 |
| Civil Twilight Begin | 05:09 |
| Sunrise | 05:40 |
| Sunset | 19:09 |
| Civil Twilight End | 19:39 |
| Nautical Twilight End | 20:16 |
| Astronomical Twilight End | 20:55 |
| Moon Illumination | 13.67% |