| Geyser | 1979-04-20 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1979-04-20 |
|---|---|
| Astronomical Twilight Begin | 03:42 |
| Nautical Twilight Begin | 04:22 |
| Civil Twilight Begin | 05:00 |
| Sunrise | 05:31 |
| Sunset | 19:13 |
| Civil Twilight End | 19:44 |
| Nautical Twilight End | 20:21 |
| Astronomical Twilight End | 21:01 |
| Moon Illumination | 44.18% |