| Geyser | 1967-08-22 |
|---|---|
| Arsenic | 1500 |
| Mud Spring | 0830 |
| Values for Old Faithful Area | 1967-08-22 |
|---|---|
| Astronomical Twilight Begin | 04:44 |
| Nautical Twilight Begin | 05:25 |
| Civil Twilight Begin | 06:03 |
| Sunrise | 06:33 |
| Sunset | 20:18 |
| Civil Twilight End | 20:49 |
| Nautical Twilight End | 21:27 |
| Astronomical Twilight End | 22:07 |
| Moon Illumination | 95.49% |