| Geyser | 1999-02-24 |
|---|---|
| Great Fountain | 0143 E, 1243 E, 2308 E |
| Values for Old Faithful Area | 1999-02-24 |
|---|---|
| Astronomical Twilight Begin | 05:32 |
| Nautical Twilight Begin | 06:06 |
| Civil Twilight Begin | 06:39 |
| Sunrise | 07:09 |
| Sunset | 18:04 |
| Civil Twilight End | 18:33 |
| Nautical Twilight End | 19:07 |
| Astronomical Twilight End | 19:40 |
| Moon Illumination | 63.18% |