| Geyser | 2000-02-02 |
|---|---|
| Grand | 0502 E, 1638 E |
| Great Fountain | 0622 E, 1501 E |
| Values for Old Faithful Area | 2000-02-02 |
|---|---|
| Astronomical Twilight Begin | 06:01 |
| Nautical Twilight Begin | 06:35 |
| Civil Twilight Begin | 07:10 |
| Sunrise | 07:40 |
| Sunset | 17:33 |
| Civil Twilight End | 18:03 |
| Nautical Twilight End | 18:38 |
| Astronomical Twilight End | 19:12 |
| Moon Illumination | 9.62% |