| Geyser | 2000-02-11 |
|---|---|
| Grand | 1123 E, 2320 E |
| Great Fountain | 0654 E, 1637 E |
| Values for Old Faithful Area | 2000-02-11 |
|---|---|
| Astronomical Twilight Begin | 05:51 |
| Nautical Twilight Begin | 06:25 |
| Civil Twilight Begin | 06:59 |
| Sunrise | 07:29 |
| Sunset | 17:45 |
| Civil Twilight End | 18:15 |
| Nautical Twilight End | 18:50 |
| Astronomical Twilight End | 19:23 |
| Moon Illumination | 31.77% |