| Geyser | 1961-04-21 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1961-04-21 |
|---|---|
| Astronomical Twilight Begin | 03:39 |
| Nautical Twilight Begin | 04:20 |
| Civil Twilight Begin | 04:58 |
| Sunrise | 05:28 |
| Sunset | 19:15 |
| Civil Twilight End | 19:45 |
| Nautical Twilight End | 20:23 |
| Astronomical Twilight End | 21:04 |
| Moon Illumination | 34.76% |