| Geyser | 1978-04-17 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1978-04-17 |
|---|---|
| Astronomical Twilight Begin | 03:48 |
| Nautical Twilight Begin | 04:28 |
| Civil Twilight Begin | 05:05 |
| Sunrise | 05:35 |
| Sunset | 19:09 |
| Civil Twilight End | 19:40 |
| Nautical Twilight End | 20:17 |
| Astronomical Twilight End | 20:57 |
| Moon Illumination | 66.08% |