| Geyser | 1967-09-06 |
|---|---|
| Veteran | 0830-1645, 1800 |
| Values for Old Faithful Area | 1967-09-06 |
|---|---|
| Astronomical Twilight Begin | 05:09 |
| Nautical Twilight Begin | 05:46 |
| Civil Twilight Begin | 06:21 |
| Sunrise | 06:51 |
| Sunset | 19:52 |
| Civil Twilight End | 20:21 |
| Nautical Twilight End | 20:57 |
| Astronomical Twilight End | 21:34 |
| Moon Illumination | 4.45% |