| Geyser | 1991-10-02 |
|---|---|
| Steamboat | 1549 maj |
| Values for Old Faithful Area | 1991-10-02 |
|---|---|
| Astronomical Twilight Begin | 05:45 |
| Nautical Twilight Begin | 06:19 |
| Civil Twilight Begin | 06:53 |
| Sunrise | 07:22 |
| Sunset | 19:03 |
| Civil Twilight End | 19:32 |
| Nautical Twilight End | 20:05 |
| Astronomical Twilight End | 20:40 |
| Moon Illumination | 36.15% |