| Geyser | 1977-04-09 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1977-04-09 |
|---|---|
| Astronomical Twilight Begin | 04:05 |
| Nautical Twilight Begin | 04:43 |
| Civil Twilight Begin | 05:19 |
| Sunrise | 05:49 |
| Sunset | 19:00 |
| Civil Twilight End | 19:30 |
| Nautical Twilight End | 20:06 |
| Astronomical Twilight End | 20:44 |
| Moon Illumination | 66.82% |