| Geyser | 1988-07-28 |
|---|---|
| Echinus | 1028, 1134 maj, 1427 |
| Values for Old Faithful Area | 1988-07-28 |
|---|---|
| Astronomical Twilight Begin | 04:00 |
| Nautical Twilight Begin | 04:50 |
| Civil Twilight Begin | 05:32 |
| Sunrise | 06:06 |
| Sunset | 20:53 |
| Civil Twilight End | 21:26 |
| Nautical Twilight End | 22:09 |
| Astronomical Twilight End | 22:58 |
| Moon Illumination | 98.79% |