| Geyser | 2000-02-10 |
|---|---|
| Grand | 0256 E, 1223 E, 2323 E |
| Great Fountain | 0109 E, 1331 E, 2150 E |
| Lakeshore | 1510 |
| Values for Old Faithful Area | 2000-02-10 |
|---|---|
| Astronomical Twilight Begin | 05:52 |
| Nautical Twilight Begin | 06:26 |
| Civil Twilight Begin | 07:00 |
| Sunrise | 07:30 |
| Sunset | 17:44 |
| Civil Twilight End | 18:14 |
| Nautical Twilight End | 18:48 |
| Astronomical Twilight End | 19:22 |
| Moon Illumination | 22.17% |