| Geyser | 1968-09-26 |
|---|---|
| Little Whirligig | 1800 |
| Steamboat | 0800 |
| Values for Old Faithful Area | 1968-09-26 |
|---|---|
| Astronomical Twilight Begin | 05:38 |
| Nautical Twilight Begin | 06:12 |
| Civil Twilight Begin | 06:46 |
| Sunrise | 07:15 |
| Sunset | 19:13 |
| Civil Twilight End | 19:42 |
| Nautical Twilight End | 20:16 |
| Astronomical Twilight End | 20:50 |
| Moon Illumination | 18.3% |