| Geyser | 2000-01-03 |
|---|---|
| Grand | 0444 E, 1917 E |
| Great Fountain | 0434 E, 1542 E |
| Values for Old Faithful Area | 2000-01-03 |
|---|---|
| Astronomical Twilight Begin | 06:14 |
| Nautical Twilight Begin | 06:49 |
| Civil Twilight Begin | 07:26 |
| Sunrise | 07:59 |
| Sunset | 16:55 |
| Civil Twilight End | 17:28 |
| Nautical Twilight End | 18:05 |
| Astronomical Twilight End | 18:40 |
| Moon Illumination | 10.48% |