| Geyser | 1939-09-01 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1939-09-01 |
|---|---|
| Astronomical Twilight Begin | 04:00 |
| Nautical Twilight Begin | 04:39 |
| Civil Twilight Begin | 05:15 |
| Sunrise | 05:45 |
| Sunset | 19:01 |
| Civil Twilight End | 19:31 |
| Nautical Twilight End | 20:07 |
| Astronomical Twilight End | 20:45 |
| Moon Illumination | 95% |