| Geyser | 2000-01-26 |
|---|---|
| Giantess | 0845 ie |
| Grand | 0629 E, 1717 E |
| Great Fountain | 0002 E, 1202 E, 2358 E |
| Values for Old Faithful Area | 2000-01-26 |
|---|---|
| Astronomical Twilight Begin | 06:07 |
| Nautical Twilight Begin | 06:41 |
| Civil Twilight Begin | 07:16 |
| Sunrise | 07:48 |
| Sunset | 17:23 |
| Civil Twilight End | 17:54 |
| Nautical Twilight End | 18:30 |
| Astronomical Twilight End | 19:04 |
| Moon Illumination | 70.07% |