| Geyser | 2000-01-09 |
|---|---|
| Fan and Mortar | 1350 E |
| Grand | 0814 E, 1659 E |
| Great Fountain | 1016 E, 1731 E |
| Values for Old Faithful Area | 2000-01-09 |
|---|---|
| Astronomical Twilight Begin | 06:14 |
| Nautical Twilight Begin | 06:49 |
| Civil Twilight Begin | 07:26 |
| Sunrise | 07:58 |
| Sunset | 17:01 |
| Civil Twilight End | 17:34 |
| Nautical Twilight End | 18:10 |
| Astronomical Twilight End | 18:46 |
| Moon Illumination | 5.82% |