| Geyser | 1931-07-14 |
|---|---|
| Ebony | 1205 |
| Values for Old Faithful Area | 1931-07-14 |
|---|---|
| Astronomical Twilight Begin | 02:32 |
| Nautical Twilight Begin | 03:29 |
| Civil Twilight Begin | 04:15 |
| Sunrise | 04:51 |
| Sunset | 20:06 |
| Civil Twilight End | 20:42 |
| Nautical Twilight End | 21:28 |
| Astronomical Twilight End | 22:25 |
| Moon Illumination | 1.97% |