| Geyser | 1982-06-07 |
|---|---|
| Bear Den | 1840 |
| Values for Old Faithful Area | 1982-06-07 |
|---|---|
| Astronomical Twilight Begin | 03:14 |
| Nautical Twilight Begin | 04:15 |
| Civil Twilight Begin | 05:02 |
| Sunrise | 05:39 |
| Sunset | 21:05 |
| Civil Twilight End | 21:41 |
| Nautical Twilight End | 22:28 |
| Astronomical Twilight End | 23:29 |
| Moon Illumination | 99.7% |