| Geyser | 1980-06-07 |
|---|---|
| Bear Den | 1930 |
| Values for Old Faithful Area | 1980-06-07 |
|---|---|
| Astronomical Twilight Begin | 03:14 |
| Nautical Twilight Begin | 04:14 |
| Civil Twilight Begin | 05:02 |
| Sunrise | 05:38 |
| Sunset | 21:05 |
| Civil Twilight End | 21:41 |
| Nautical Twilight End | 22:29 |
| Astronomical Twilight End | 23:30 |
| Moon Illumination | 37.13% |