| Geyser | 1980-08-25 |
|---|---|
| Africa | 1315 |
| Bear Den | 1152 |
| Constant | 1200 |
| Echinus | 1055, 1425, 1548 |
| Little Whirligig | 1305 |
| Veteran | 1304 |
| Values for Old Faithful Area | 1980-08-25 |
|---|---|
| Astronomical Twilight Begin | 04:51 |
| Nautical Twilight Begin | 05:30 |
| Civil Twilight Begin | 06:07 |
| Sunrise | 06:38 |
| Sunset | 20:12 |
| Civil Twilight End | 20:42 |
| Nautical Twilight End | 21:19 |
| Astronomical Twilight End | 21:59 |
| Moon Illumination | 98.84% |