| Geyser | 2000-01-24 |
|---|---|
| Grand | 1014 E, 1956 E |
| Great Fountain | 0437 E, 1357 E |
| Values for Old Faithful Area | 2000-01-24 |
|---|---|
| Astronomical Twilight Begin | 06:08 |
| Nautical Twilight Begin | 06:43 |
| Civil Twilight Begin | 07:18 |
| Sunrise | 07:50 |
| Sunset | 17:20 |
| Civil Twilight End | 17:52 |
| Nautical Twilight End | 18:27 |
| Astronomical Twilight End | 19:02 |
| Moon Illumination | 87.35% |