| Geyser | 1993-12-09 |
|---|---|
| Grand | 1435 ie |
| Values for Old Faithful Area | 1993-12-09 |
|---|---|
| Astronomical Twilight Begin | 06:03 |
| Nautical Twilight Begin | 06:38 |
| Civil Twilight Begin | 07:14 |
| Sunrise | 07:48 |
| Sunset | 16:43 |
| Civil Twilight End | 17:16 |
| Nautical Twilight End | 17:53 |
| Astronomical Twilight End | 18:28 |
| Moon Illumination | 21.51% |