| Geyser | 1999-01-14 |
|---|---|
| Great Fountain | 0323 E, 1323 E, 2303 E |
| Values for Old Faithful Area | 1999-01-14 |
|---|---|
| Astronomical Twilight Begin | 06:13 |
| Nautical Twilight Begin | 06:48 |
| Civil Twilight Begin | 07:24 |
| Sunrise | 07:56 |
| Sunset | 17:08 |
| Civil Twilight End | 17:40 |
| Nautical Twilight End | 18:16 |
| Astronomical Twilight End | 18:51 |
| Moon Illumination | 11.15% |