| Geyser | 1931-04-30 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1931-04-30 |
|---|---|
| Astronomical Twilight Begin | 03:21 |
| Nautical Twilight Begin | 04:04 |
| Civil Twilight Begin | 04:44 |
| Sunrise | 05:15 |
| Sunset | 19:25 |
| Civil Twilight End | 19:56 |
| Nautical Twilight End | 20:36 |
| Astronomical Twilight End | 21:19 |
| Moon Illumination | 94.76% |