| Geyser | 1985-09-01 |
|---|---|
| Echinus | 0850, 0938 min, 0949 |
| Values for Old Faithful Area | 1985-09-01 |
|---|---|
| Astronomical Twilight Begin | 05:02 |
| Nautical Twilight Begin | 05:40 |
| Civil Twilight Begin | 06:16 |
| Sunrise | 06:46 |
| Sunset | 20:00 |
| Civil Twilight End | 20:29 |
| Nautical Twilight End | 21:05 |
| Astronomical Twilight End | 21:44 |
| Moon Illumination | 96.57% |