| Geyser | 1974-09-02 |
|---|---|
| Echinus | 0835, 0943, 1050, 1205, 1315, 1430, 1541, 1654 |
| Whirligig | 1140, 1540 |
| Values for Old Faithful Area | 1974-09-02 |
|---|---|
| Astronomical Twilight Begin | 05:03 |
| Nautical Twilight Begin | 05:41 |
| Civil Twilight Begin | 06:17 |
| Sunrise | 06:47 |
| Sunset | 19:58 |
| Civil Twilight End | 20:28 |
| Nautical Twilight End | 21:04 |
| Astronomical Twilight End | 21:42 |
| Moon Illumination | 99.82% |