| Geyser | 1974-09-12 |
|---|---|
| Congress Pool | 1800 |
| Echinus | 0910, 1042, 1212, 1520, 1652 |
| Little Whirligig | 0830 ie, 1442 |
| Values for Old Faithful Area | 1974-09-12 |
|---|---|
| Astronomical Twilight Begin | 05:18 |
| Nautical Twilight Begin | 05:54 |
| Civil Twilight Begin | 06:29 |
| Sunrise | 06:58 |
| Sunset | 19:40 |
| Civil Twilight End | 20:09 |
| Nautical Twilight End | 20:44 |
| Astronomical Twilight End | 21:20 |
| Moon Illumination | 20.53% |