| Geyser | 1988-04-15 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1988-04-15 |
|---|---|
| Astronomical Twilight Begin | 04:51 |
| Nautical Twilight Begin | 05:31 |
| Civil Twilight Begin | 06:07 |
| Sunrise | 06:38 |
| Sunset | 20:08 |
| Civil Twilight End | 20:38 |
| Nautical Twilight End | 21:15 |
| Astronomical Twilight End | 21:54 |
| Moon Illumination | 2.14% |