| Geyser | 1999-02-19 |
|---|---|
| Echinus | 1128 |
| Great Fountain | 1233 E |
| Whirligig | 1426 |
| Values for Old Faithful Area | 1999-02-19 |
|---|---|
| Astronomical Twilight Begin | 05:40 |
| Nautical Twilight Begin | 06:13 |
| Civil Twilight Begin | 06:47 |
| Sunrise | 07:17 |
| Sunset | 17:57 |
| Civil Twilight End | 18:26 |
| Nautical Twilight End | 19:00 |
| Astronomical Twilight End | 19:34 |
| Moon Illumination | 11.36% |