| Geyser | 1933-07-06 |
|---|---|
| Ebony | 1935 |
| Values for Old Faithful Area | 1933-07-06 |
|---|---|
| Astronomical Twilight Begin | 02:21 |
| Nautical Twilight Begin | 03:21 |
| Civil Twilight Begin | 04:09 |
| Sunrise | 04:45 |
| Sunset | 20:10 |
| Civil Twilight End | 20:46 |
| Nautical Twilight End | 21:34 |
| Astronomical Twilight End | 22:34 |
| Moon Illumination | 97.74% |