| Geyser | 1961-09-02 |
|---|---|
| Steamboat | 0000 A |
| Values for Old Faithful Area | 1961-09-02 |
|---|---|
| Astronomical Twilight Begin | 04:03 |
| Nautical Twilight Begin | 04:41 |
| Civil Twilight Begin | 05:17 |
| Sunrise | 05:47 |
| Sunset | 18:58 |
| Civil Twilight End | 19:28 |
| Nautical Twilight End | 20:04 |
| Astronomical Twilight End | 20:42 |
| Moon Illumination | 46.76% |