| Geyser | 1988-04-04 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1988-04-04 |
|---|---|
| Astronomical Twilight Begin | 05:15 |
| Nautical Twilight Begin | 05:52 |
| Civil Twilight Begin | 06:28 |
| Sunrise | 06:57 |
| Sunset | 19:54 |
| Civil Twilight End | 20:24 |
| Nautical Twilight End | 20:59 |
| Astronomical Twilight End | 21:36 |
| Moon Illumination | 96.52% |