| Geyser | 1974-01-31 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1974-01-31 |
|---|---|
| Astronomical Twilight Begin | 07:02 |
| Nautical Twilight Begin | 07:37 |
| Civil Twilight Begin | 08:11 |
| Sunrise | 08:42 |
| Sunset | 18:30 |
| Civil Twilight End | 19:01 |
| Nautical Twilight End | 19:36 |
| Astronomical Twilight End | 20:10 |
| Moon Illumination | 49.3% |