| Geyser | 1974-09-19 |
|---|---|
| Congress Pool | 1800 |
| Echinus | 0936, 1105, 1232, 1530, 1657 |
| Emerald Spring | 1800 |
| Little Whirligig | 1800 |
| Whirligig | 1520 |
| Values for Old Faithful Area | 1974-09-19 |
|---|---|
| Astronomical Twilight Begin | 05:28 |
| Nautical Twilight Begin | 06:03 |
| Civil Twilight Begin | 06:37 |
| Sunrise | 07:06 |
| Sunset | 19:27 |
| Civil Twilight End | 19:56 |
| Nautical Twilight End | 20:30 |
| Astronomical Twilight End | 21:05 |
| Moon Illumination | 12.84% |